The belly button, also called a navel -- or umbilicus, if you want to get truly technical -- is present in all mammals. Cats are mammals, so cats have belly buttons. ... The belly button is where the umbilical cord connected mother and unborn baby or, in this case, queen and unborn kitten.

What animals have navels?

Only placental mammals will have belly buttons. Marsupials, such as kangaroos, koalas and opossums, give birth to relatively underdeveloped young. Before they are born, they get their nutrients from a yolk sac in their mother's womb.

Can cats have outie belly buttons?

In some rare instances, cats actually do have what appears to be a protruding or 'outie' belly button, similar to some humans. Unfortunately, this is actually indicative of an umbilical hernia. It is essential that you get this checked out by a vet as soon as possible.