Prairie dogs, a small 'North-American ground squirrel, can dig underground tunnels up to 30 m long in which thousands of individuals can live.
The butterfly fish, with the help of its pectoral fins, is capable of undertaking very long flights above the water.
The tailorbird makes its nest by sewing the edges of the leaves together. It uses its beak as a needle and plant's fibre as thread.
Porpoise a marine animal, related to wholes and dolphins, is so intelligent that it can copy many actions of humans and can also imitate the voice of a man and even laugh.
The favourite food of the insect, giant cricket, is human hair.
In one hectare of rain forest, it is possible to find 80 to 200 different species of plants.
Elephant is the only animal with four knees. It smells water from three miles away.
Kitti's hog-nosed bat found in Thailand is the smallest mammal in the world. About 3 cm long, being the size of a large bumblebee, it weighs only 2 gm.
Rattlesnake rattles its tail as a warning before it attacks its prey and to set a trap as well.
The largest dinosaur egg ever found was 30 cm in diameter.
