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 bones or cartilage?
Even though sharks are fish, they are different from other fish in that they do not have bones. Sharks do have skeletons, but they檙e made of cartilage, not bone. A cartilage skeleton has many advantages for sharks; it light, flexible, and heals fast.
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.