Because animals hatched in eggs do not have an umbilical cord, therefore. do not have a bellybutton, the scare left after the umbilical cord is cut. Some animals not hatched from eggs come out of their mothers in a sack and the sack is licked off by their mothers, therefore are left without a bellybutton.
No. Only mammals have belly buttons.
All placental animals have belly buttons.
Mammals, yes.
no pigs dont have belly buttons
Dolphins are placental mammals. All placental mammals have bellybuttons of some kind.
Cats are placental mammals, and all placental mammals have bellybuttons of some sort.
As a matter of fact, dolphins do have bellybuttons. All mammals have them because that is where their umbilical cord was connected.
Yes, they do eat bellybuttons. It's their favorite food!
no
Yes.
if you dont know this answer.................you dont know anything.............
James baldry