Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
Whales and dolphins can't taste anything other than salt.
11
The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
12
Some older/less efficient worker termites will develop 'backpacks' of toxic chemicals that explode when the termite is threatened. They are essentially used as suicide bombers when the colony is being attacked.
8
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
Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
17
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
The elephant shrew’s closest relative isn’t a shrew — it’s actually an elephant
9