This includes a wide range of animals, from tiny shrews to massive whales. Here are some examples:
* Humans
* Dogs
* Cats
* Horses
* Cows
* Elephants
* Whales
* Bats
* Monkeys
* Kangaroos
* Bears
* Lions
* Tigers
* Rabbits
* Mice
While all mammals have hair, it can vary greatly in appearance and function depending on the species. Some animals have thick fur for insulation, while others have sparse hair for sensory purposes.