Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
Bats sleep 18-20 hours per day.
5
When Koko, the gorilla famous for knowing sign language, was asked where gorillas go after death, she responded by signing “Comfortable hole, bye.”
23
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
109
The seahorse is the only fish to have a neck.
12