Do cats have belly buttons?
Nutrients, oxygen, and wastes are exchanged between the developing embryo and the mother through a placenta. An umbilical cord connects the embryo to the placenta. The navel or belly button is where the umbilical cord was attatched to the young placental mammal. So even though you may not notice it unless you look very carefully, dogs and cats do, indeed, have belly buttons. CATS ROCK!!!!!!!!!!!!!!!!!!
