An amphibian is an animal that can live on land or in water.
My son wants a pet frog for Christmas, but I'd rather have a cat than an amphibian.
The largest living amphibian is the Chinese giant salamander.
The decline in amphibian populations since the 1980s is viewed as a significant threat to biodiversity.
On the other hand, Huxley's summation of the primitive characters of all the mammals led him to an amphibian stem type, a prophecy which has proved faulty because based on erroneous analysis and comparison.