Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
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
Sharks, like other fish, have their reproductive organs in their chests.
248
Cats recognise the voice of their owner, but never evolved to care.
22
A scorpion can hold its breath for up to 6 days.
19