Meaning & use
mammal
A warm-blooded animal that has hair or fur, breathes air, and feeds its young with milk.
See it in a sentence
Whales are mammals, even though they live their entire lives in the ocean.
The zoo's newest exhibit features several small mammals native to the desert.
A note on using this word
Humans are mammals too, sharing the defining traits of live birth and milk production with other members of the group.
Words with a similar meaning
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