- Dolphins support sick or injured animals, swimming under them for hours at a time and pushing them to the surface so they can breathe.
- Wolves and wild dogs bring meat back to members of the pack not present at the kill.
- Male baboons threaten predators and cover the rear as the troop retreats.
- Gibbons and chimpanzees with food will, in response to a gesture, share their food with others of the group.
- Bonobos have been observed aiding injured or handicapped bonobos.
- According to the research of Gerald Wilkinson, vampire bats have a "buddy system" in which a bat who has had a successful night of feeding will regurgitate blood for its less fortunate companion.
- In numerous bird species, a breeding pair receives help in raising its young from other "helper" birds, who protect the nest from predators and help to feed the fledglings.
- Most mammal carnivores like wolves or dogs have a habit of not harming pack members below certain age, of opposite sex or in surrendering position (in case of some animals, the behavior exists within entire species rather than one pack).
- Vervet Monkeys give alarm calls to warn fellow monkeys of the presence of predators, even though in doing so they attract attention to themselves, increasing their personal chance of being attacked.
- Walruses have been seen adopting orphans who lost their parents to predators.
