Sharks have no air bladders, so they must swim constantly or they'll sink.

Cockroaches can go without eating for three months, as long as they have water.

Birds are largely unaffected by spicy things, like chillies, as they are not sensitive to capsaicin, the hot stuff in chilies.

The male penguin incubates the single egg laid by his mate. During the two month period he does not eat, and will lose up to 40% of his body weight.

"Mako sharks" show cannibalistic tendencies while still in mother's womb; older embryos will eat the younger embryos and eggs.

Dalmatians are born without spots.

Birds do not sleep in their nests. They may occasionally nap in them, but they actually sleep in other places.

The owl is the only bird to drop its upper eyelid to wink. All other birds raise their lower eyelids.

"Sanguinary ants" raid the nests of other ant tribes, kill the queen, and kidnap many of the workers

Frogs do not need to drink water as they absorb the water through their skin.

Humans, Ants and Chimpanzees are the only organisms that wage organized warfare.

The penguin is the only bird that can swim but can't fly.

Kiwis are the only birds that hunt by smell.

Ninety percent of all species that have become extinct have been birds.

The elephant is the only mammal with four knees.

Elephants are the only animals that can't jump.

Mosquitoes are attracted to the color blue twice as much as any other color

There are twice as many kangaroos in Australia as there are people.

Centipedes always have an uneven pairs of walking legs.

Roosters cannot crow if they cannot extend their necks.

Male and female giraffes tend to eat from different parts of a tree to ensure that the sexes do not compete for food.

The albatross can glide on air currents for several days and can even sleep while in flight.

A crocodile always grows new teeth to replace the old teeth.

Bulls are colorblind, it is the motion of the cape which angers them.

Giraffes rarely sleep more than 20 minutes a day

Not a single new livestock animal has been domesticated in the last 4,000 years.

Honeybees navigate using the sun as a compass, even when it is hidden behind clouds

An ant can survive for up to two weeks underwater.

Eel-skin wallets have been known to demagnetize credit cards

In the magic world of seahorses it is the male who gets pregnant and has the babies.

A blind Chameleon is still able to change colours to match its environment.

Spiders inject their victims with a chemical that dissolves them. Then the spiders drink their lunch with their mouths which are soda straw-like.

When hippos are upset, their sweat turns red.

If you cut the head off a cockroach, it will continue to live for up to many more weeks.

Male mosquitoes are vegetarians. Only female bites.

A cheetah can accelerate from 0 to 70 km/h in 2 seconds.

Nine out of every 10 living things live in the ocean.

Sharks never get sick, as far as is known, they are immune to every known disease including cancer.

Sharks will eat anything. The only exception, is that they will not eat anything in the vicinity of where they give birth. This is because they are so stupid, this is the only way nature protects them from accidentally eating their own babies.

If a drop of liquor gets on a scorpion, it will immediately commit suicide with its own stinger.

The ant can lift 50 times its own weight, can pull 30 times its own weight.

Female black widow spiders eat their husbands after mating. That's how they got that name.

All shrimp are born male, but slowly grow into females as they mature.

Frogs never drink. They absorb water from their surroundings by osmosis.