Alex was an African Grey parrot. When he died, his last words to his owner were " You be good. I love you."

Tommy the dog went to mass with his human when she was alive, but now he comes down and sits quietly during mass even after her death.

Roscoe the orangutan was heartbroken by the loss of his parents. So heartbroken he stopped eating and stop responding to medical treatment...During that same span, an older sickly dog was found in the zoo and brought to their animal treatment center. The two met and have been together ever since!

Diver Yang Yun thought she was going to die when her legs were paralyzed during a free diving contest. Mila, a Beluga whale, saw her struggling and used her nose to guide the diver to safety.

Patricia Adshead was making tea in her kitchen when a machete gang broke in her home. She was trapped in the kitchen with her dog, Oi. Oi leapt to her defense and bit the attacker's hand. Even when he brought the weapon down on her, Oi managed to chase him out of the house, saving Adshead.

When author and legendary conservationist Lawrence Anthony died, these South African elephants marched for 2 hours through the Zululand bush until they reached his house. These elephants had been saved by Anthony years ago, after they were deemed violent and sentenced to death. Anthony rehabilitated the animals and gave them a chance at a better life.

A labrador named Lisha has been a surrogate mother to many orphaned animals. She has helped raised more than 30 baby animals how to survive.

Koko's reaction to a sad moment in a movie

These children were playing with George, a Jack Russell Terrier, when Pit Bulls attacked. He tried to protect the kids by barking and rushing at the other dogs, but they started biting him on the head and back. His intervention is what saved the children, though he later died due to his injuries. He was posthumously awarded a medal for his bravery.

Two guide dogs named Salty and Roselle were awarded a joint Dickin Medal for their loyalty to their owners as led their owners down 70 floors out of the World Trade Center on 911 before the buildings collapsed.

A gorilla who didn't forget the man who raised him.

A dog's incredible journey from lover to fighter.

When Ellie, a blind spaniel, was adopted her new human never expected her other dog, Leo, would take on the duty of being Ellie's seeing-eye dog. When they go to the park, Leo will guide Ellie around, protecting her from rowdier dogs.

A diver's discovery reveals that fish use tools to suffice their needs. The diver caught this image of a fish smashing a clam against a rock in order to get its innards.

An amazing reunion of two abused circus elephants after 25 years being apart.

It's been said that cows have best friends, and they get really stressed when they're not together. When they are with their preferred partner, their heart rates are reduced compared if they are with a different random individual.

Christian the Lion's amazing story.

Every year, Gandolf the owl would lay an egg and wait for it to hatch, but it never would. One day, she was given a goose egg, and it was a perfect match. Most owls would immediately kill any newborn that did not look, smell, or feel like their own species, but Gandolf did not. She cared for the baby goose as if it was her own.

Chimps grieve the passing of their friend. When Dorothy the chimp died of heart failure, her fellow chimps hugged each other and watched solemnly as their friend was laid to rest.

Oscar the cat can sense when someone is going to pass away.Oscar was always able to tell when one of the residents in his nursing home was close to death. He would sit with them on their bed during their last moments to comfort them.

At the Pet Porpoise Pool Marine Park in Coffs Harbour, Australia Jet and Miri are best friends, despite nature telling them they should be enemies. Nothing makes these two happier than playing together.

Coaley the Great Dane helps raise baby chimpanzees. Molly Badham and Nathan Evans founded a sanctuary for monkeys. It is now one of the largest areas dedicated to primates in the world. They've gotten help caring for the primates from a unexpected breed...Great Danes! They have proved to be gentle giants that are wonderful caregivers for orphaned monkeys.

Hanama the Orangutan is the proud father of abandoned lion and tiger cubs. He helps feed these fuzzy cubs, until they are able to take care of themselves.

Caught in a housefire, this mother and her pups were saved by this wonderful firefighter. A photographer spotted the firefighter resting after his last trip inside the burning house, while the mother dog approached him. The photographer picked up their camera just in time to capture this beautiful shot.