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
Queen ants have one of the longest life-spans of any known insect - typically up to 30 years. Western harvester ant queens can live up to 40 years!
2
Mosquitoes don't just bite you, they also pee on you.
11
Dolphins have names for one another.
18
The cat brain weighs about 30g.
167