The cat brain weighs about 30g.
167
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Giant Anteaters' front legs look like a panda.
48
The oldest recorded elephant lived for 82 years.
213
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
Condoms were originally made of animal intestines or linen.
347