Goldfish lose their color if kept in dim light.
Aside from nesting, common swift spend their entire lives in the air, living on insects they catch in flight.
A snail can sleep for 3 years at a stretch.
Butterflies can taste with their feet.
The venomous Portuguese-man-of-war is actually an animal made up of four separate organisms, known as a siphonophore .
Polar bears have black skin under their white fur.
Fleas can jump distances 100 times their body length.
A beaver’s teeth never stop growing. It needs to chew on tree trunks and branches to keep them from getting too long.
Houseflies hum in the key of F.
Anteaters can eat up to 35,000 ants a day.
Once a giant clam picks a spot to live on a reef, it does not move for the rest of its life.
A cockroach can live several weeks with its head cut off.
Galapagos tortoises sleep for 16 hours a day and can go a year without food or water.
The 2-inch-long golden poison dart frog has enough venom to kill 10 adult men
Male emperor penguins will stand without eating for up to two months in the Antarctic elements while the female goes to feed.
An adult elephant’s weight is as much as the weight of blue whale’s tongue.
The oldest known animal in the world was Ming, the 405-year old clam, discovered in 2007.
The hummingbird is the only animal that can fly backwards.
The venomous Portuguese-man-of-war is actually an animal made up of four separate organisms, known as a siphonophore
A flamingo can only eat when it’s head is upside down.