mammal

n. a warm-blooded animal that has hair or fur and feeds its babies with milk from the mother.

n. a vertebrate animal of the class Mammalia, characterized by endothermic regulation, the presence of hair or fur, and mammary glands in females.

“Whales are actually mammals, not fish, because they breathe air and give birth to live young.”

“Biologists classify humans, dogs, and even dolphins as mammals due to their shared physiological traits and reproductive methods.”

n. an animal with a specific bone structure, including three small bones in the ear.

n. a vertebrate distinguished by specific skeletal features, including three middle-ear ossicles and a single bone in the lower jaw.

“Scientists can identify an ancient fossil as a mammal by looking at the shape of its jaw.”

“The transition from reptilian ancestors is marked by the migration of jaw bones to the inner ear, a defining characteristic of the modern mammal.”

Technical