A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
293
Only 3% of bird species have penises.
0
A 42-foot sperm whale has about 7 tons of oil in it.
209
There is a sea snail that wears a suit of iron plated armor. It is the only known animal to use iron sulphide as skeletal material.
9
A scorpion can hold its breath for up to 6 days.
19
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20