Swans.

Bald eagles. here is a good list: http://www.wonderquest.com/animal-mate-for-life.htm

Ducks and lobsters.

Penguins!

Praying Mantis

Penguins. Shingleback Skink. Whooping cranes. Geese and Swans. Whales. Beavers. Condors and Eagles. Crows. Bunches of other various birds and fish. Occasionally people...

Gibbon apes, wolves, termites, coyotes, barn owls, beavers, bald eagles, golden eagles, condors, swans, brolga cranes, French angel fish, sandhill cranes, pigeons, prions (a seabird), red-tailed hawks, anglerfish, ospreys, prairie voles (a rodent), and black vultures — are a few that mate for life http://www.wonderquest.com/animal-mate-for-life.htm

Lovebirds http://warrensburg.k12.mo.us/animals/ashtonr1/index.html

Macaws mate for life. That's why proven pairs are so expensive!

humans hehehe just kidding

Canada Geese

Swan.

Seahorse

A EARTH WORM.

penguins and some baboons i dont know if it was a special case but after a baboon's mate passed away at a zoo we went to she had to be moved to her own environment because she would attack any baboon who would come near. and people try to say animals dont have feelings or souls, are they blind?

Black widow males. Heh.

canadian geese

I believe earth worms of asexual. Am I wrong?

cockatiels

Large Parrots, although, on rare occations, some do cheat.

Gibbon apes, wolves, termites, coyotes, barn owls, beavers, bald eagles, golden eagles, condors, swans, brolga cranes, French angel fish, sandhill cranes, pigeons, prions (a seabird), red-tailed hawks, anglerfish, ospreys, prairie voles (a rodent), and black vultures — are a few that mate for life. Of course, it depends on what you mean by "mate for life." These creatures do mate for life in the social sense of living together in pairs but they rarely stay strictly faithful. About 90 percent of the 9,700 bird species pair, mate, and raise chicks together — some returning together to the same nest site year after year. Males, however, often raise other males’ offspring unknowingly. DNA testing reveals that the social-pair male did not father 10, 20, and sometimes 40 percent of the chicks. Black vultures, though, discourage infidelity. All nearby vultures attack any vulture caught philandering. Only about 3 percent of the 4,000 mammal species are monogamous (and Homo sapiens isn’t one of them). Beavers, otters, bats, wolves, some foxes, a few hoofed animals, and some primates live together in social pairs but dally sexually much as birds do. Wolves, for example, are generally monogamous but also breed polygamously if the male is unrelated to the female and prey is plentiful. Moreover, they sometimes have more than one mate in a lifetime, says Dan Stahler, biologist at the Yellowstone Gray Wolf Restoration Program run by the National Park Service. This happens "if one mate dies, gets kicked out of the pack, or is physically unable to breed due to injury, illness, etc." One species is absolutely monogamous. In the black darkness of the deep sea, the tiny male anglerfish (perhaps one tenth the female’s size) detects and follows the scent trail of a female of his own species. Once found, he bites his chosen one and hangs on. His skin fuses to hers, their bodies grow together (he gets his food through a common blood supply and becomes essentially a sperm producing organ). They mate for life — a short life for the male.

Canada geese and wolves

emperor penguins

Ugly people!! :)

Snow geese

Geese and some penquins.

wolves, and I believe eagles do as well.

Siamangs

Penguins Swans

swans do and so do seahorses..

Penguins :D

I've heard that rabbits keep mating for life, although it might be with many different partners. :p Otherwise, I know that some humans do.

peaple

i think wolves mate for life, +4.

There are a lot. Penquins and dolphins come to mind.

albatros penguin seahorse

ducks

Pterophyllum Scalare - the common freshwater Angelfish. Actually, many Cichlids (family Cichlidae) in particular mate for life.

Penguins

Gibbon apes, termites, coyotes, barn owls, beavers, bald eagles, golden eagles, condors, swans, pigeons, red-tailed hawks, ospreys and black vultures — are a few that mate for life:)+++++

Virtually no animal mates for life. Those they say do actually can have several mates during their life time. The Lord God never intended for any of His creation to be monogamous, including man, but to have many partners over their lifetime with no guilt or shame.