There are about seventeen species of hedgehogs, their species is more than fifteen million years old. Hedgehogs live in a variety of habitats, from forests to deserts.
The hedgehog's body covers 7, 000 to 10, 000 thorns. The spines of the hedgehog are constantly renewed, the old ones fall out, and new ones grow to replace them.
Hedgehogs can be pets. They usually get along well with dogs and cats.
Although hedgehogs are generally considered insectivorous, they eat a wide variety of foods, animals and plants, including snails, fruits, eggs, snakes, worms, grass roots, etc.
Interesting fact, hedgehogs have been eaten since ancient times. They are usually baked in clay to get rid of the thorns.
Hedgehogs have very poor eyesight and a strong sense of smell. At the slightest danger, they curl up into a ball, exposing thorns to the enemy.
By old age, hedgehogs, like people, begin to lose their teeth.
Hedgehogs are born naked. The thorns begin to "germinate" only after 2-3 days.
Interestingly that when faced with a new scent, hedgehogs begin to lick its source, creating fragrant saliva in the mouth, and then rub against it with thorns. Scientists still do not know why they are doing this.