Hedgehogs have quills for protection against predators.
i think that they have 400 spines
The hedgehog's back is covered in sharp spines. If threatened, it will roll into a tight ball.
16000
yes
No, unlike porcupines, they have hollow tubes on their back.Hedgehogs are easily recognized by their spines, which are hollow hairs made stiff with keratin. Their spines are NOT poisonous or barbed and, unlike the quills of a porcupine, cannot easily be removed from the hedgehog. However, spines normally come out when a hedgehog sheds baby spines and replaces them with adult spines. This is called "guiling" When under extreme stress or during sickness, a hedgehog can also lose spines.
Cacti live in the deserts of the Americas and many have sharp spines. In Africa there are other plants, euphorbias for example, that resemble cacti but have thorns rather than spines.
Hedgehog
The hedgehog and the porcupine, are two animals that have protective quills.
One of the many cactus species
Yes. Both the male and female echidna have equally sharp spines.
you would cry
Hedgehogs have spines to protect themselves from predators and threats, when threatened they curl into a ball with their spines sticking out.