This multi-billion pound industry increasingly involves organised crime groups, who see wildlife as a low risk route to profit.
The very existence of kindness and altruism seems to contradict Darwin’s theory of evolution. So how could kind behaviour have evolved?
When lawyers represent the interests of abused animals in the courtroom, they help human victims too.
The short answer is no. But worms can use different parts of their body to do some of the jobs that our tongues do - like tasting and crushing food.
The animals can see you as a threat, so make them feel at home.
Keeping pets is a habit that goes way back into our hunter-gatherer past, and has played an important part in our evolution.
Dogs, rats, cats, cows, chickens and mice have also changed the world.
When humans are happy, they may smile, or laugh, or dance - but what do animals do? Melissa, age 12, wants to know how she can tell if her cat is happy and likes you.
The animal kingdom is full of lefties and righties, although rarely is the ratio skewed as much as it is in humans. If you're wondering about your own pet, you can find out with a simple experiment.
Digital and animal cultures pose a profound challenge to the law’s recognition of human uniqueness.
Bees sting other animals, including humans, when they think there might be a threat to their hive. But Evie, age 8, wonders if bees ever accidentally sting other bees.
In the wake of natural disasters, pets are be stranded, lost or abandoned. There are simple guidelines that can help keep your whole family safe.
Volunteers are leading the investigation into a vicious UK animal killer.
Bear-man conflicts have made news in the Alps but history tells a story of a possible cohabitation.
They survived the pressures of globalisation and now thrive internationally.
Bugs use their own defecation to defend their young, locate their homes and increase mating opportunities. For humans, insect faeces may even have untapped medicinal properties.
We're used to thinking of our eyes detecting light as the foundation of our visual system. But what's going on in other cells throughout the body that can detect light, too?
A collection of The Conversation Global's best articles on animals, from glow-in-the-dark frogs to the wood beetles that do humanity's dirty work.
There's a terrifying species that spreads rapidly, breeds prolifically and eats hundreds of plants. But the first research into the actual harm caused by giant African land snails found ... not much.
From shapeshifting octopi to acid-firing beetles.