Kathleen and I are 43 years married.

A List of Animals That Mate for Life

There are plenty of examples of animals that mate for life.

Just to name a few:

Gibbon apes
Wolves
Termites
Coyotes
Barn owls
Beavers
Bald eagles
Golden eagles
Condors
Swans
Brolga cranes
French angel fish
Sandhill cranes
Pigeons
Prions
Red-tailed hawks
Anglerfish
Ospreys
Prairie voles
Black vultures
Some animals, like the black vulture, will actually attack and sometimes kill an unfaithful member of their species.