People also ask
Why are sharks not considered mammals?
Sharks do not have mammary glands, and do not feed their young, so are therefore disqualified from being named mammals. Sharks use gills to breath with, as fish do, rather than lungs that exchange respiratory gases. No, sharks are not mammals, but actually fall under the category, or class, of fish.
Is a shark a fish?
Sharks don have lungs, and breathe using gills. Sharks don have hair. Their bodies are covered in hard scales. We檝e also found that sharks are fish. In addition, because they don have swim bladders, and skeletons made of cartilage rather than bone, we檝e found that sharks are cartilaginous fish.
Do sharks have mammary glands?
Sharks fall under the classification of cartilaginous fish. Mammals are animals that give birth to young ones and they have mammary glands. The mammary glands of female mammals produce milk for their young ones. Mammals have many characteristics in common, but the most outstanding characteristic is the presence of mammary glands.
Are sharks mammals that lay eggs?
Well spotted! Platypuses, and four species of echidna (spiny anteaters), are mammals that lay eggs. These five species are known as monotremes. They檙e the only mammal species that lay eggs! Like mammals ?and unlike many fish ?many sharks give birth to live young. So in this respect sharks are similar to mammals.