On this globe, insects come in many different species. The quantity is approximated to be in the 20–30 million range.

The only bug that can survive without its head for longer than a week is the cockroach, which is a fascinating fact about them. 

The largest and heaviest mammal in the Animalia kingdom is the blue whale. They are warm-blooded marine mammals that can grow to be 30 to 35 metres long and weigh 130 to 150 tonnes.

 You better believe it. A small number of animal species have different blood colours, although most animals, including humans, have red blood.

Leopards are extremely powerful animals that prefer to live alone and can run at speeds of up to 58 kph. They are expert climbers who enjoy taking naps on tree branches during the day and going out in search of food at night.

 Parrots can learn and pronounce about 200 different words, and pigeons are thought to have been the first bird to carry communications. First tamed by humans were geese, pigeons, doves, and parrots.

Gorillas can contract human ailments like colds.

 A young Chinese water deer is practically small enough to fit in the palm of your hand. 

The male ostriches may roar like lions and run faster than horses. 

In the wild, lions rarely kill more than twenty prey every year. 

Ninety percent of the hunting is done by the female lion. 

A Yorkshire Terrier, which weighed just four ounces, was the tiniest dog ever recorded.

If held underwater for an extended period of time, turtles, water snakes, crocodiles, alligators, dolphins, whales, and other aquatic animals would perish. 

Farmers in China raise about half of the pigs in the world.

 Dogs' eyesight is typically better than humans', though not as colourful.

 Deer do not have gall bladders.

Not all polar bears are white. They have colourless fur that reflects light and appears white. Four identical young are born atonce to nine-banded armadillos.

A giant tortoise from the Galapagos Islands can weigh 550 pounds, equivalent to a brown bear. 

Three kilometres distant, one can hear a lion's roar. Wild Bactrian (two-humped) camels have a maximum daily water consumption of 88 quarts.

 11 gallons, to be exact! When threatened, the Regal Horned Lizard shoots blood from his eyes. 

The eyes of an ostrich are larger than the brain. Every day, koalas sleep for 18 to 22 hours.

 The lifespan of a sea turtle can reach 100 years. A bowling ball can be crushed by a grizzly bear because of its powerful teeth