Elephants that give birth as teenagers die younger, but are fitter than mothers that delay, scientists say.
What do you know about animal sleep?
There are plenty of chances to see charismatic wildlife UK-wide
Audio slideshow of the making of the BBC television series BBC News
Why it's hard to stick up for venomous snakes BBC News
Your nature photos
Share your photos of wildlife in winter.
Nikki Turner on Twitter discusses news that a new family of birds has been discovered