From shapeshifting octopi to acid-firing beetles.
Snail shells appear to be part of the creatures' immune system.
New research reveals how flamingos can stand – and even sleep – on one leg for so long.
In 1997, scientists announced they'd created a healthy sheep cloned from another ewe's mammary gland cell. Two decades on, the technique is being refined and applied to new challenges.
New research into how wasps divide up their jobs shows how economics can be key to understanding animal behaviour.