First of all, they're called QUILLS! And it's to protect themselves.
Porcupines have quills.
Yes, hedgehog quills are modified hairs.
Hedgehog's spines are called quills. They are used for self-defense. Hedgehogs roll up into a ball and stick their quills out. They huff and jump, which pokes the quills into the attacker.
Hedgehogs have quills for protection against predators.
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.
The only time that a hedgehogs quills can hurt is if you push your hand into them while you are petting him, or if it is rolled into a ball, and its quills are raised in defense. Also only if you are dumb enough to pet them backwards, which would be very uncomfotable for both the handlr and the hedgehog.
The hedgehog and the porcupine, are two animals that have protective quills.
looks like a cute little hamster with spikes like a porcupine on its back
Porcupines are rodents with spines (or quills as the are also known).
Hedgehog quills are modified hairs.
The average adult hedgehog has 5,000 to 7,000 quills.
Quills.