The reindeer is the only mammal that can see UV light.
17
Dogs sometimes fake being sick to get attention.
26
A tortoise named Adwaita lived to 255 years old. To put it into perspective, he was born before the United States of America existed and his death was announced on CNN (1750-2006).
12
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57