What types of animals have belly buttons?

When petting your dog's belly, you might notice they lack a navel similar to your own. While mammals do have belly buttons, they're a little harder to find. Since mammals are gestated inside their mothers, they are all born with umbilical cords. read more

All animals that give live birth, like mammals. A belly button is just where there was an umbilical cord. Boom. read more

Animals who are mammals all have belly buttons, because these animals are all born from the mother. (Rather than animals like reptiles, who hatch from eggs.) Mammals have belly buttons because the navel is the spot on the body where a special tube used to connect the mother and baby, which was how the baby received food and oxygen before it was born. read more