Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
There's a phone app called RoboRoach that allows you to remotely control a cockroach through a chip that you to manually implant into the unwitting critter.
10
Cats and dogs can hear ultrasound.
350
Bats sleep 18-20 hours per day.
5
Early American humans hunted car-size armadillos and used their shells for houses.
12