Live out Sentence Examples

Courage comes in many shapes, sizes and forms. While racing into a burning building to save lives and helping out a person who is being robbed are certainly courageous and admirable acts, even smaller occurrences can count as acts of courage.

It may seem as though mammals like dolphins and whales are very different from lions and tigers. But they share many characteristics common only to the vertebrate class Mammalia. Some animals may share one or two of these characteristics of mammals, but unless they share most of them, they are not mammals. Keep reading to learn more about the similarities between all mammals.