A snail can sleep for three years.
40
Cat urine glows under a black-light!
43
A domestic cat can sprint at about 31 miles per hour.
274
When cats are happy, they may squeeze their eyes shut.
10
A blue whale's heart is the size of a Volkswagen Beetle!
37
Ducks will only lay eggs early in the morning.
36
Penguins can convert salt water into fresh water.
97