Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
The cat brain weighs about 30g.
167
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
The reindeer is the only mammal that can see UV light.
17
Two dogs were among the Titanic survivors.
262