Scientists have attached stilts to ants' legs to prove that ants reach their goal by counting their steps. Ants with stilts marched past their goal due to the new length of their stride.
Amazing fact: Howler monkey
Howler monkeys spend up to 80% of their time resting
Amazing fact: Gentoo
The fastest underwater swimming bird is the Gentoo Penguin, able to swim up to 22 mph (36 km/h)
Amazing fact: Giraffes
A giraffe's tongue grows to about 21 inches in length.
Amazing fact: Hippopotamus
When a hippopotamus stays out of water for too long, it secretes red-colored sweat, to protect itself from the sun.
