How many species still to name? That’s a good question.
New species are being discovered all the time, which only adds to the problem of knowing how many there are on the planet today. It also helps to know what we mean by species.
From cats to dragonflies, Leonardo sketched scores of animals.
Leonardo da Vinci/Royal Collection Trust
Rather than prioritizing human beings at the pinnacle of the animal kingdom, Leonardo revered all living beings. When he compared people and animals, it's the animals that often came out on top.
Tigers have whisker hairs even on their front legs and chin!
Whiskers are not just ordinary hairs. They are thicker and go deeper into the tiger's skin and send messages to its brain about what is happening in the world around it.
Can animals find the beat in music and dance along?
Revealed: spotted hyaena are actually excellent hunters in their own right.
Animal cruelty investigators are doing unappreciated work for low pay and without union benefits or protections.
Animal cruelty investigators do challenging and unappreciated work for very low pay, and normally without union benefits or protections.
Happiness is a warm puppy.
Recognising animals as sentient means welfare laws must consider animals' feelings as well as their physical conditions.
Cats and dogs in the UK eat billions of tonnes of meat every year, but insect pet food could change this.
Wild boars are being scapegoated for an epidemic of African swine flu that threatens the pork industry.
Yes, I am a bit chilly, why?
When you're warm and cozy inside, it can be natural to wonder if the animals you see outside your window this winter are doing OK. Don't worry – they're doing better out there than you would.
Stories of substitution and surrogates are all too common in the wildlife trade, especially when it comes to medicines derived from animal parts.
Do you know this downy woodpecker?
By looking closely at traits like wing feathers and spot patterns, a computer scientist trained an algorithm to recognize individual woodpeckers.
Generations of giraffes.
It can actually be very tricky to define a species, but in the 1900s, scientists found a pretty good way.
Handout Czech Customs Authority
The slaughtered tigers were not bred in zoos, yet their story should put captive breeding in general into question.
Evolution can explain why animals are scared – but what can we do to help?
The common vampire bat.
From naked mole rats to the immortal jellyfish – the creatures that would make Dracula shudder.
Giovanni Aldini’s experiments with a human corpse.
Frankenstein might look like fantasy to modern eyes, but to its author and original readers there was nothing fantastic about it.
Banning a handful of breeds has not helped to improve public safety.
Dog skin is exactly the same as yours - depending on how much sun it’s exposed to, it can get darker and lighter.
Dog skin is exactly the same as yours and mine! It changes colour depending on how much light it's exposed to.
Sharks eating seagrass? Sounds fishy, but the reality is that animals don't conform to the strict categories we try to place on their diets.