Bats sleep 18-20 hours per day.
5
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
Two dogs were among the Titanic survivors.
262
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
Cats recognise the voice of their owner, but never evolved to care.
22
There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
40
The difference between antlers and horns is that antlers are shed each year and are made of bone while horns are kept for life and are made of living tissue and bone with a sheath that is very similar to human finger nails.
10