10 most difficult preda­tors riddles

Hyenas have long been regarded as being cowardly scavengers. Today they are known for killing as many as 95% of the animals they eat, and for driving off leopards or lionesses from their kills.

The saltwater crocodile is the largest of all living reptiles, reaching up to 6.3 m and 1,360 kg. It may be found from Northern Australia to the eastern coast of India.

In the binomial name of the brown bear, Ursus arctos, Linnaeus simply combined the Latin and Greek names (Ursus is "bear" in Latin, while actors is "bear" in Greek). The Latin name of the polar bear is Usrus Maritimus, literally "sea bear".

The shrimp, called also Pink Floyd pistol shrimp, may be found in Pacific waters at Panama coast. The sound of its snapping claw shut reaches 210 decibels (while whales achieve 188 decibels), and can kill passing nearby small fish. It is probably the loadest sound an animal creates.

Amur leopard (Panthera pardus orientalis) it is one of the most endangered species in the world. Adult individuals usually weigh about 40-50 kg, but also those that have a mass of 75 kg are known.

The king cheetah is a variety of cheetah with a rare mutation for cream-coloured fur marked with large, blotchy spots and three dark, wide stripes extending from their neck to the tail.

The praying mantis chews its victims in a manner similar to the way mammals do; however, its jaws close sideways, and not from the top or bottom like mammals' mouths. Mantis always eats the head first.

Only lions live and hunt in groups. A pride of lions consists of related females and offspring and a small number of adult males.

When the crocodile's mouth is closed, the large fourth tooth in the lower jaw fits into a constriction in the upper jaw. For hard-to-distinguish specimens, the protruding tooth is the most reliable feature to define a species

The sloth bear is an insectivorous bear species native to the Indian subcontinent. Compared to brown and black bears, sloth bears have lankier builds, long, shaggy coats that form a mane around the face (similar to that of a lion), long, sickle-shaped claws, and a specially adapted lower lip and palate used for sucking insect.