Rodents Sentence Examples
The rodents are numerous and include several peculiar species.
They are the only rodents in that island.
The presence of these rodents at night is made known by their screaming cries.
The more typical members of the family are rat-like burrowing rodents, living in communities.
In the order of Rodents squirrels are very numerous, and porcupines of two genera are met with.Advertisement
The numbers of these destructive rodents are kept in check by foxes, dogs, cats and pole-cats, which feed upon them.
In Africa the name of flying-squirrel is applied to the members of a very different family of rodents, the Anomaluridae, which are provided with a parachute.
Rodents are numerous, the mouse (111 - us sylvaticus) is very destructive, and beavers are met with in places.
Altogether 1621 bones, nearly all broken and gnawed, were found; of these 691 belonged to birds and small rodents of more recent times.
Large rodents, like the porcupine and cane rat, are numerous.Advertisement
In habits these rodents appear to be very similar to the true flying-squirrels.
The bones of the bear, horse, rhinoceros, lion, elephant, hyena and of many birds and small rodents were unearthed.
Arctic foxes feed largely on sea-birds and lemmings, laying up hidden stores of the last-named rodents for winter use.
Of the amphibious rodents, the pi-ea (Cavia aperea), mod, (C. rupestris), paca (Coelogenys paca), cutia (Dasyprocta aguti) and capybara (Hydrochoerus capybara) are noteworthy for their size and extensive range.
The rodents are represented by an abundance of rats, with comparatively few mice, and by the ordinary squirrel, to which the people give the name of tree-rat (ki-nezumi), as well as the flying squirrel, known as the momo-dori (peach-bird) in the north, where it hides from the light in hollow tree-trunks, and in the south as the ban-tori (or bird of evening).Advertisement
Anything the rodents may meet with on their journeys, such as thistle-stalks or bones, are collected and deposited on the viscachera.
Besides chipped stone knives, the teeth of rodents, sharks, and other animals served an excellent purpose.
The European porcupine (Hystrix cristata) is the typical representative of a family of Old World rodents, the Hystricidae, all the members of which have the same protective covering.
These rodents are characterized by the imperfectly rooted cheek-teeth, imperfect clavicles or collar-bones, cleft upper lip, rudimentary first front-toes, smooth soles, six teats and many cranial characters.
The hamsters, of which there are several kinds, are short-tailed rodents, with large cheek-pouches, of which the largest is the common C. frumentarius.Advertisement
The cetacea and a few rodents are also without it.
Capybaras are aquatic rodents, frequenting the banks of lakes and rivers, and being sometimes found where the water is brackish.
Rodents may be characterized as terrestrial, or in some cases arboreal or aquatic, placental mammals of small or medium size, with a milk and a permanent series of teeth, plantigrade or partially plantigrade, and generally five-toed, clawed (rarely nailed or semi hoofed) feet, clavicles or collar-bones (occasionally imperfect or rudimentary), no canine teeth, and a single pair of lower incisors, opposed by only one similar and functional pair in the upper jaw.
In all rodents the upper incisors resemble the lower ones in growing uninterruptedly from persistent pulps, and (except in the hare group, Duplicidentata) agree with them in number.
Rodents include by far the greater number of species, and have the widest distribution, of any of the orders of terrestrial mammals, being in fact cosmopolitan, although more abundant in some parts, as in South America, which may be considered their headquarters, than in others, as in Australasia and Madagascar, where they are represented only by members of the mouse-group, or Myoidea.Advertisement
All rodents are vegetable-feeders, and this uniformity in their food and in the mode of obtaining it, namely by gnawing, has led to that general uniformity in structure observable throughout the group; a feature which renders their classification difficult.
All rodents, with the sole exception of the dormice, have a caecum, often of great length and sacculated,, as in hares, the water-rat and porcupines; and the long colon in some, as the hamster and water-rat, is spirally twisted upon itself near the commencement.
The peculiar odour evolved by many rodents is due to the secretions of special glands, which may open into the prepuce, as in Mus, Microtus and Cricetus, or into the rectum, as in Arctomys and Thryonomys, or into the passage common to both, as in the beaver, or into pouches opening near the vent, as in hares, agoutis and jerboas.
The first family is represented by certain peculiar North American rodents known as sewellels, constituting the genus Haplodon (or Aplodon) and the family Haplodontidae and section Haplodontoidea.
Sewellels are medium-sized terrestrial rodents, with no postorbital process to the skull, which is depressed in form, and rootless cheek-teeth, among which the premolars number I, the first in the upper jaw being very small.
Finally, we have the marmots (Arctomys), which are larger and more heavily built rodents, with short ears, more or less short tails and rudimentary or no cheek-pouches.
The front root of the zygomatic arch is nearly vertical, and placed so far back that it is above the second molar, while the orbit - a unique feature among rodents - is almost completely surrounded by bone.
The few representatives of this group are all very small rodents, confined to tropical Africa, the Philippines and the Malay islands.
The second section, Castoroidea, of the present group includes only the family Castoridae, represented by the beavers, which are large aquatic rodents characterized by their massive skulls, devoid of post-orbital processes, with the angle of the lower jaw rounded, the molars rootless or semi-rooted, with re-entering enamel-folds, and one pair of premolars above and below.
Thomas places these rodents in the neighbourhood of the porcupines.
The remaining rodents, which include two families - the picas (Ochotonidae) and the hares and rabbits (Leporidae) - constitute a second sub-order, the Duplicidentata, differing from all the foregoing groups in possessing two pairs of incisors in the upper jaw (of which the second is small, and placed directly behind the large first pair), the enamel of which extends round to their postericr surfaces.
They are small rodents with complete clavicles, foreand hind-limbs of nearly equal length, no external tails and short ears.
On these grounds, while admitting that they are allied to the rodents, it has been pointed out that they can scarcely be included in the Rodentia, and the order Proglires has in consequence been proposed for their reception.
Whatever may be the true affinity of these problematical mammals, undoubted rodents are known from the Lower Eocene of both Europe and North America.
These rodents are thought to be allied to the Anomaluridae; and it is partly on their evidence that the family Pedetidae is placed next the latter.
Although showing some dental characters approximating to the porcupines, these rodents are regarded as allied to the Castoridae, although forming an isolated type.
The upper incisors have persistent pulps, and are curved longitudinally, forming a semicircle as in rodents; they are, however, not flattened from before backwards as in that order, but prismatic, with an antero-external, an anterointernal and a posterior surface, the first two only being covered with enamel; their tips are consequently not chisel-shaped, but sharp-pointed.
The brain resembles that of typical ungulates far more than that of rodents.
The ureters open into the fundus of the bladder as in some Rodents.
The fauna of Tibet has been by no means exhaustively investigated, especially the rodents and smaller species of animals.
The Hemimeridae include the single genus Hemimerus, which contains only two species of curious wingless insects with long, jointed cerci, found among the hair of certain West African rodents.
Allen in America demonstrated the same fact upon the same species of rodents.
The largest of rodents, it possesses a close underwool of bluish-brown hue, nearly an inch in depth, with coarse, bright, black or reddish-brown top hair, 3 in.
Among the rodents the hamster and the field-mouse are a scourge to agriculture.
The rodents are numerous and include most, if not all, of the Amazonian species - the capybara (Hydrochoerus capybara), cavia (C. aperea), paca (Coelogenys paca) and cutia (Dasyprocta aguti), all amphibious and having an extensive range.
The Arabs, however, succeed by closing up all the exits from the burrows with a single exception, by which the rodents are forced to escape, and over which a net is placed for their capture.
The incisors are large and chisel-like, much as in rodents.
Few other rodents have been designedly naturalized, but the North American grey squirrel (Sciurus cinereus) appears to be established as a wild animal in Woburn Park, Bedfordshire, England, and may probably spread thence.
In habits these rodents are very like marmots, the typical species inhabiting the open prairies, while the others are found in mountains.
The hibernation of these rodents is only partial, and confined to seasons of intense cold.
The rodents are the most numerously represented order, which includes the coypu or nutria (Myopotamus coypus), the chinchilla (Chinchilla laniger), the tuco-tuco (Ctenomys brasiliensis), a rabbit, and 12 species of mice - in all some 12 genera and 25 species.
Amongst the rodents squirrels abound, and the so-called flying squirrels are represented by several species.
Agoutis are slender-limbed rodents, with five front and three hind toes (the first front toe very minute), and very short tails.
In testing the effects of bacteria by inoculation the smaller rodents, rabbits, guinea-pigs, and mice, are usually employed.
Although subsisting to a considerable extent on aquatic plants, these rodents frequently come ashore to feed, especially in the evening.
There are deer in the forests and on the open savannahs, the rabbit and squirrel are to be seen on the eastern slopes of the Andes, and partly amphibious rodents, the "capybara" (Hydrochoerus) and "guagua" (Coelogenys subniger), are very numerous along the wooded watercourses.
They are most common on the head, while they constitute the " whiskers," or " feelers," of the cats and many rodents.
In other instances, notably in the lemurs, but also in certain carnivora, rodents and marsupials, they occupy a position on the fore-arm near the wrist, in connexion with glands, and receive sensory powers from the radial nerve.
In mammals with two sets of teeth the number of those of the permanent series preceded by milk-teeth varies greatly, being sometimes, as in marsupials and some rodents, as few as one on each side of each jaw, and in other cases including the larger portion of the series.
If, however, the so-called Proglires of the lower Eocene are really ancestral rodents, the order is brought into comparatively close connexion with the early generalized types of clawed, or unguiculate mammals.
Very different, on the other hand, is the condition of things in Australia and Papua, where marsupials (and monotremes) are the dominant forms of mammalian life, the placentals being represented (apart from bats, which are mainly of an Asiatic type) only by a number of more or less aberrant rodents belonging to the mouse-tribe, and in Australia by the dingo, or native dog, and in New Guinea by a wild pig.
All the dormice are small rodents (although many of them are double the size of the British species), of arboreal habits, and for the most part of squirrel-like appearance; some of their most distinctive features being internal.
Although mouse-like in general appearance, these rodents are distinguished by their elongated hind limbs, and, typically, by the presence of four pairs of cheek-teeth in each jaw.
In America these rodents inhabit forest, pasture, cultivated fields or swamps, but are nowhere numerous.
Farther east it is replaced by more or less nearly allied species; while other species extend the range of the genus across central and northern Asia, and thence, on the other side of Bering Strait, all through North America, where these rodents are commonly known as gophers.
The remains of two species of Edentata have been found, as well as those of several species of small Rodents, also of a Carni v ore (Cryptoprocta), a larger variety of the species still living in the island.
A few rodents have increased in numbers; the prairie dog especially is a pest in the alfalfa fields of the arid lands (as are pocket-gophers at places in the east).
Muscle atrophy in rodents is created by suspending the animals by their tails for weeks or months at a time.
The two rodents had made the mistake of stopping under a tree inhabited by those pesky hairless apes.
All in a Days Work Placing poison bait in the sewer system to eradicate rodents.
If they were left to grow and were never worn down they would grow into the rodents brain!
Hamsters are peculiar little rodents with large cheek pouches and short stubby tails.
They have highly dextrous front paws and will forage at night for food, such as fruit, nuts, small rodents and corn.
Rodents including ground and rock squirrels and prairie dogs are the natural hosts.
Rodents have permanently growing incisor teeth; they must continually gnaw to keep their teeth under control.
Rabbits, after their introduction, quickly supplanted other small marsupials and rodents, competing with them as favorites among hunters.
Science 2 April 2004 Perfecting recall Researchers using rodents have found that the neurotransmitter norepinephrine is essential in retrieving certain types of memories.
The African porcupine is one of the largest rodents in the world, belonging to the same family as the Guinea Pig.
Grains - may contain fats, which give off odor in their breakdown and attract rodents or other pests.
They may chase and catch rodents, but don't know how to survive on them.
He won the 2001 Carnegie Medal for " The Amazing Maurice and his educated rodents " and was awarded the OBE in 1998.
Alternatively it requires the results of mutational studies in transgenic rodents.
All the species of gerbil kept in captivity are a shade of agouti normal in wild rodents.
Even smaller rodents can live three to five years.
Welcome to the environment enrichment page for pet rodents.
These and other TSE's can be modeled in laboratory rodents.
However, there seem to be studies that show that pine shavings are not good for the health of our rodents.
A number of rodents serve as reservoirs for human diseases, such as bubonic plague, tularemia, scrub typhus, and others.
There are conditions in which we have an abnormal increase in the tissue elements but which strictly should not be defined as hypertrophies, such as new-growths, abnormal enlargements of bones and organs due to syphilis, tuberculosis, osteitis deformans, acromegaly, myxoedema, &c. The enormously long teeth sometimes found in rodents also are not due to hypertrophy, as they are normally endowed with rapid growth to compensate for the constant and rapid attrition which takes place from the opposed teeth.
The African cane-rats, Thryonomys (or Aulacodus), are large terrestrial rodents, ranging from the centre of the continent to the Cape, easily recognized by their deeply fluted incisors (see Co yp u).
The so-called prairie-dogs, which are smaller and more slender North American rodents with small cheek-pouches, form a separate genus, Cynosnys; while the term pouched-marmots denotes the various species of souslik, Spermophilus (or Citillus), which are common to both hemispheres, and distinguished by the presence of large cheek-pouches (see RODENTIA).
Similarly imbricated epidermic productions form the covering of the undersurface of the tail of the African flying rodents of the family Anomaluridae; and flat scutes, with the edges in apposition, and not overlaid, clothe both surfaces of the tail of the beaver, rats and certain other members of the rodent order, and also of some insectivora and marsupials.
They may chase and catch rodents, but do n't know how to survive on them.
These and other TSE 's can be modeled in laboratory rodents.
The small rodents scampered approximately, which are occupied in the daily implementations of their gloomy lives.
The small rodents scampered around, taking care in the daily accomplishments of its sad lives.
Cats and dogs become infected through tick bites or when they hunt or eat infected rabbits, hares or rodents.
This order is named due to the modifications of the incisor teeth that project forward, in a similar way to rodents.
We've all wandered into a pet store and found our way into the small animal section, only to be surrounded by all those adorable rodents.
Rodents are generally most active at dusk, so it is best to visit the pet store in the late afternoon or early evening if possible.
Natural prey animals for cats are rodents, birds, insects, and sometimes amphibians.
Some animals like the smell, however, and valerian is sometimes planted far away from houses to encourage rodents to live there instead of coming indoors.
Affenpinscers were originally bred to kill the rodents that were so prevalent in the homes of the 1600s.
Rodents are not welcome in your vegetable garden if you want to eat the crop yourself!
Dried sunflower seeds are a favorite of mice, chipmunks, squirrels and rats, so be sure to use a tight-fitting lid or else you will have very fat rodents and a very empty container in a few days!
One potential problem when planting pumpkin seeds is that the seeds can be eaten by birds or rodents.
You can also use sunflower seeds as pet food for birds and small rodents.
But if snaring a few rodents or making your dog a salad isn't always convenient, choosing an organic dry or moist food is a handy alternative.
Hamsters and other rodents use wood shavings as bedding, while a cat or a dog's bedding will usually refer to some sort of pillow.
Cats, the primary carriers of the organism, become infected by eating rodents and birds infected with T. gondii.
Children are particularly likely to be bitten by rodents infesting their home and are, therefore, most likely to contract rat-bite fever.
The parents of children living in rodent-infested conditions, or who have pet rodents (mice, rats, gerbils) should be vigilant to illness in their children.
Bites from mice, rats, or squirrels rarely require rabies prevention because these rodents are typically killed by any encounter with a larger, rabid animal, and would, therefore, not be carriers.
Caskets are available from extra small sizes for pets like ferrets, rabbits and other rodents up to extra large for pets weighing between 80 and 100 pounds.
Landfill, trash collection center or junkyard - This used up energy of vehicles, rotting food and garbage attracts other deadly energies of rodents and insects that carry diseases.
Ball Pythons eat rodents (mice or small rats), either live or dead and frozen (also known as pre-killed).
Both types of rodents are available at pet shops that carry snake supplies.
Dogs require more responsibility and time than fish and rodents.
Cats are more independent then dogs, but more work than rodents.
Various eagles eat snakes, fish, rodents, and even turtles.
Not only can it attract insects and rodents, it can also kill motivation for keeping on top of the dishes the next day.
There is also the possibility that the ducts may accumulate insects, rodents, and may even grow mold and fungus.
Regular maintenance is the best way to keep your air ducts clean and free from unwanted odors, mold, mildew, insects, and rodents.
Bretherton, who dresses in black leather with metal studs and sports a spiky hairdo and facial hair, is a true expert on insects, rodents, and all kinds of other critters.
Chinchilla Club can help you meet others with the same interest in these crepuscular rodents.
The grounds for referring the African jumpinghares (Pedetidae) to the Anomaluroidea rest largely on the evidence of certain Tertiary rodents from Europe, such as Issiodoromys.
Dormice a r e small arboreal rodents, with long hairy tails, large eyes and ears, and short fore-limbs, ranging over Europe, Asia and Africa.
These are small rodents with somewhat the appearance of the pigmy squirrels (Nannosciurus), which in some degree connect the family with the Muridae.
They are small rat-like rodents, with one pair of upper premolars, which are mere pins, as is the last molar, and the two pairs of limbs of normal length, with the metatarsals separate; the infra-orbital opening in the skull being triangular and widest below, while the incisive foramina in the palate are elongated.
The Dipodinae, on the other hand, are leaping rodents, with the metatarsals elongated, a small upper premolar present or absent, and the crowns of the molars tall.
Other allied African genera are Steatomys and Lophuromys, which include several species of small mouse-like rodents, with the habits of dormice generally, though some burrow in cornfields.
In the rodents now to be considered, the angular process of the lower jaw arises from the outer side of the sheath of the incisor.
The majority of these rodents, many of which are of large size, are terrestrial, but a few are burrowing, others arboreal and two or three aquatic.
The Old World porcupines, constituting the family Hystricidae, are terrestrial, stoutly built rodents, with limbs of subequal length in front and behind, and the skin covered with strong spines.
In the family Caviidae, typified by the cavies (or guinea-pigs), may be included a large number of South and Central American rodents, among which the agoutis and pacas are often ranked as a family (Dasyproctidae) by themselves.
Hydrochaerus, in which all the feet are fully webbed, includes a single species, the capybara, or carpincho, the largest of living rodents.
All these rodents are remarkable for the manner in which the liver is divided into minute lobules.
The African cane-rats, Thryonomys, are large terrestrial rodents, ranging from the centre of the continent to the Cape, easily recognized by their deeply fluted incisors.
They take their name of tuco-tuco from their cry, which resembles the blows of a hammer on an anvil, and may be heard all day as the little rodents move in their burrows, generally formed in sandy soil.
Several of these rodents live in the Andes, where the ground is covered for months with snow.
Bats, various species of rodents, and gazelles are very common, as is the ibex in the valleys of the Dead Sea.
The tapir, fox, deer, wild cat, wild dog, carpincho or water hog and a few small rodents nearly complete the list of quadrupeds.
The Rodents are also well represented by various squirrels, mice and hares.
In the latter are the coney, jerboa, several small rodents and the ibex.
The agouti and the armadillo are practically extinct and the only other mammals are ground squirrels, rats, a few other small rodents, and some bats.
Among the rodents there are hares, marmots, beavers, squirrels, rats and mice, the last in enormous swarms. Of the larger game the chamois and deer are specially noticeable.
There are six species of monkey corresponding to those of Guiana and the Amazon valley, the sloth and ant-eater, 12 known genera of rodents, including many species of Mures, the cavy, the capybara, the paca, the nutria, the agouti, the tree porcupine, Loncheres cristata, Echimys cayen and the Brazilian hare.
The typical genus Tragulus, which is Asiatic, contains the smallest representatives of the family, the animals having more of the general aspects and habits of some rodents, such as the agoutis, than of other ruminants.
Cavies in general, the more typical representatives of the Caviidae, are rodents with hooflike nails, four front and three hind toes, imperfect collar-bones, and the cheek-teeth divided by folds of enamel into transverse plates.
The porcupine and a large Octodont rodent (Ctenodactylus), the jerboa (two species), the hare, and various other rodents are met with in Tunisia.
All authorities are agreed in dividing rodents into two great sections or sub-orders, the one, Duplicidentata, comprising only the hares, rabbits and picas, and the other, Simplicidentata, all the rest.
They are burrowing, and, in some cases at any rate, partially aquatic rodents.
The family, Chinchillidae, typified by the wellknown chinchilla, includes a small number of South American rodents with large ears and proportionately great auditory bullae in the skull, elongated hind-limbs, bushy tails, very soft fur and perfect clavicles.