A new born kangaroo is small enough to fit in a spoon!
7
There are more insects in one square mile of rural land than there are human beings in the world.
55
A killer whale's heart beats 30 times a minute under water, 60 times a minute on the surface.
30
Despite the hump, a camel's spine is straight.
43
Hummingbirds can't walk.
32
A snail can sleep for three years.
40
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13