MAMMALS ARE UNIQUE
Answer:
Mammals have just three features that are unique to them. Mammary glands, hair, and three middle ear bones are the three distinguishing features. Other species, including birds, insects, and reptiles, share many features considered to be unique to mammals.
Breast Glands
This evolutionary adaptability gave rise to the moniker "mammals." Mammary glands are present solely in mammalian species and not in any other species. To generate milk for children, mammary glands originated from modified sweat glands. Only female animals produce milk, an adaptation that necessitates a time and energy expenditure to care for the newborn young.
Hair
Hair on mammals is an adaptation that offers insulation to keep the animal warm, skin protection, camouflage through color patterns, and assists the animal by offering better sensory information through touch.
Ear Bones in the Middle
Every mammals has three middle ear bones known as the hammer, anvil, and stirrup. Malleus, incus, and stapes are their scientific names. The hammer and anvil originated from primordial animal ancestors' jaw bones. These bones collaborate to provide vibrations to the eardrum.
Differntiate oviparous mammals and viviparous mammals
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