Hummingbirds can weigh less than a penny!
12
A group of kittens is called a "kindle".
10
In just about every species of mammal, the female lives longer than the male.
43
The world's largest amphibian is the giant salamander. It can grow up to 5 ft. in length.
66
Cats recognise the voice of their owner, but never evolved to care.
22
There are no penguins in the North Pole.
56
Dogs sometimes fake being sick to get attention.
26