A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
The largest breed of rabbit is the Flemish Giant.
65
Lobsters have blue blood.
476
Cats lose almost as much fluid in the saliva while grooming themselves as they do through urination!
205
Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
11
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
Vanilla flavoring is sometimes made with an ingredient from beaver pee.
82
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