Some lay their eggs and leave, others carry their young for a year in a pouch: in nature, maternal care comes in many forms.
Sandhill Crane with adopted Canada Goose gosling.
Mark Graf / Alamy
Biologists are puzzled by evidence of animals that care for those from other social groups or even species.
Xu Wei Chao/Shutterstock
You share the same drug habits, the same age-related memory problems and are similarly impatient when forced to wait for food.
Red squirrels benefit from long-term social relationships with their neighbours — from a distance.
Red squirrels are solitary by nature, but research has found that they benefit from familiarity with other squirrels.
The fangblenny pretends to be a helpful ‘cleaner fish’ but actually bites its hosts.
fenkieandreas / shutterstock
Even the most mutually-beneficial evolutionary relationship can turn sour.
Different animals have different ways of showing they're happy. Their behaviours aren't as straightforward as you might think.
Coyotes and other wildlife are making backyards and urban communities part of their homes.
THE CANADIAN PRESS/Silvio Santos
Lethal methods and relocation aren't effective, sustainable or humane approaches to human-wildlife conflicts.
New research shows how tamarin monkeys transfer new types of food to their young.
Patting, shoeing, grooming, feeding, and even putting them in a stable - the list of seemingly benign human interactions that can confuse or upset horses is surprisingly long. On the eve of the official Horse's Birthday, we explain why.
In experiments, African grey parrots have shown an ability with numbers.
Some animals demonstrate an ability for mathematics that reflects a more sophisticated understanding of language.
A Californian sea lion swims behind empty seats in its enclosure at a zoo in Berlin, April 4 2020.
One aquarium in Japan has asked the public to make video calls to captive garden eels so they don't forget about human visitors.
Clapping underwater takes real strength. But wild grey seals can do it, to warn off competitors and attract potential mates.
The male bluehead wrasse defends his group of yellow females, one of whom has to step-up and take charge if he leaves.
When a male bluehead wrasse is removed from the group he dominates, the largest female changes sex, rapidly transforming ovaries into sperm-producing testes. Molecular research shows how.
Not all pets will make good house cats, but there are ways to make a life indoors more fulfilling.
Prey species rely on camouflage and escape to avoid getting eaten. How can they make them work together?
Stylish? No. Effective? Probably not.
Tony Wills/Wikimedia Commons
Magpie attacks aren't as common as you (and the media) might think. But here are a few tricks to get you through swooping season unscathed - and a few classic tactics that don't work.
Therizinosaurs and their fossilised eggs.
Mark Witton/Kohei Tanaka
New research suggests some dinosaurs buried and protected eggs in groups.
A wild leopard seal on South Georgia.
Cooperation or theft? New observations show wild leopard seals sharing food when targeting king penguins in Antarctica.
Understanding happiness in chickens could tell us how to improve their housing.
Nests are not for sleep. They are for babies.
We need to understand what a swallow's nest is really for – and it is not mainly for sleeping.