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They're vertebrates, they're born that way. An animal looking like that and living like that has to have some sort of supporting structure, and for the hedgehog it's a spine.
Or maybe you're thinking of the things that make them prickly, not the backbone. There are plenty of animals out there who would make themselves a meal of a fairly slow and harmless animal as a hedgehog, so the spines developed as a defence. If threatened the hedgehog curls up into a prickly ball, and anyone trying to bite or claw it end up getting hurt.
THe hedgehog ended up taking that route instad of developing an ability to run, hide or bite back.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoThe real question is why don't we have spines.
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What animal lives in a desert but has spines?
Hedgehogs live in parts of the Sahara and have spines.
What mammals have spines which protect you from predator?
Hedgehogs and porcupines do
What are hedgehogs spines made out of?
Just normal bones
Do pandas have spines?
If you mean spinal columns, yes pandas have them. If you mean prickly spines, such as the porcupine or hedgehogs have, the answer is no.
Why do hedgehog have spins?
Hedgehogs have spines to protect themselves from predators and threats, when threatened they curl into a ball with their spines sticking out.
Why does hedgehogs have spines?
hedgehogs are mammals! and hair is what sets mammals from all animals. so yes they do fall out but they grow back. just like human hair and dogs sheding fur!
Why do hedgehogs have spines on their back?
to protect itself from creatures that could harm it.
Are hedgehogs' spines hairs?
Yes, hedgehog quills are modified hairs.
Are hedgehogs related to porcupines?
No. Although they are both placental mammals, and both have sharp spines, porcupines are in the rodent family, but hedgehogs are not.
What do small hedgehogs look like?
Hedgehogs are very cute and when small have a round snout and white or brown fur. They have spines on their backs.
What does the spines do to a hedgehog?
the hedgehogs spines helps him defened himself (fox,wolves and other animals) xx xx thanxs for the question
Why do hedgehog has many sharp spines?
Hedgehogs have quills for protection against predators.
