His baby developed omphalitis, and they had to take him to the hospital.

He got angry over a trivial matter.

The baby's umbilical cord is cut immediately after birth.

After failing, he blamed himself and was biting his own navel (figuratively expressing deep regret).

The baby's umbilical vein plays a crucial role in transporting nutrients from the mother.

He was surprised to find a belly button lint.

He was unconsciously fiddling with his navel lint while watching TV.

This farm is raising wild boar-pig hybrids.

The babirusa is a rare animal native to Indonesia.

The porcupine is a nocturnal animal that protects itself with its sharp quills.