There is a sea snail that wears a suit of iron plated armor. It is the only known animal to use iron sulphide as skeletal material.
9
A female ferret will die if it goes into heat and cannot find a mate.
143
Emus and kangaroos cannot walk backwards.
26
The difference between antlers and horns is that antlers are shed each year and are made of bone while horns are kept for life and are made of living tissue and bone with a sheath that is very similar to human finger nails.
10
Sheep outnumber humans in New Zealand 15 to 1.
33
The average life expectancy of an ant is 45-60 days.
81
Bats always turn left when exiting a cave.
40
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6