Condoms were originally made of animal intestines or linen.
347
The cat brain weighs about 30g.
167
Cats recognise the voice of their owner, but never evolved to care.
22
The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
12
Domestic pigs average a top speed of about 11 miles per hour.
182
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 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
The oldest creature ever found was Ming the clam at an admirable 507 years old.
16