When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
Termites are being researched as a possible renewable energy source as they can produce up to 2 litres of hydrogen from ingesting a single sheet of paper, making them one of the planet’s most efficient bioreactors.
24
Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
16
Penguins have a gland above their eye that turns saltwater into freshwater.
12
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
Whales and dolphins can't taste anything other than salt.
11
The reindeer is the only mammal that can see UV light.
17
Jaguars frequently get high by eating hallucinogenic roots, which also increases their senses for hunting.
6