Polar bears dig dens to seek shelter from the cold winds.

Polar bears have huge paws to prevent them from sinking into the snow.

Sunflower is brightly coloured to attract insects.

Elephants have big ears to keep themselves cool.

A frog is green to blend in with the green leaves of the plants. (Camouflage)

Opossums play dead when under threat. Their heart and breathing rate decrease.

A koala makes unusually loud grunting noises to attract its mate.

Ducks have webbed feet to help them swim.

Tortoises hide in their shell when they sense danger.

The flowers of some cactus open only at night when they are cooler.

Antarctic fish have proteins that prevent them from freezing.

The ears of the fennec fox are loaded with blood vessels for it to lose heat quickly to the surroundings.

Kangaroos cool themselves by licking their forelegs.

The Amazonian Royal Flycatcher has a large bunch of brightly coloured feathers to attract mates.