The lifespan of mammals is about 1 and a half billion heartbeats.
127
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
An average cat has 1-8 kittens per litter and can have 2-3 litters per year. During her productive life, one female cat could have more than 100 kittens. A single pair of cats and their kittens can produce as many as 420,000 kittens in just 7 years.
10
Kittens are born both blind and deaf.
25
A group of frogs is called an army.
51
Termites work 24 hours per day and they do not sleep.
57
The fingerprints of koala bears are virtually indistinguishable from those of humans, so much so that they could be confused at a crime scene.
73
A domestic cat can sprint at about 31 miles per hour.
274