What is the critical characteristic that places the quokka within Class Mammalia?

Answer

Females possess mammary glands producing milk for young

While Class **Mammalia** members share features like being warm-blooded (endothermic) and possessing hair or fur, the singular, critical characteristic that defines this class is the presence of mammary glands in females. These glands are specialized structures responsible for producing milk, which is used to nourish the young offspring. This reproductive and nursing strategy is the definitive trait that groups the quokka with humans, dogs, and bats within this class.

What is the critical characteristic that places the quokka within Class Mammalia?
taxonomyanimalmammalQuokka