The spikes on a bearded dragon are their protection in the wild. When afraid or startled the spikes become hard, sharp and pointy. These spikes can cut a predator's mouth or tear at a birds talons.
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No no, not at all. They look sharp and painful, but you can pick them up without feeling the same after math of a porcupine. The side spikes are the softest. As for the top spikes, they are a little hard, put just pet them from the head down to the back.
Hope it helped (p.s. I'm on a campaign to make sure NO bearded dragon question goes unanswered.)
If you pet the spikes they feel like rubber. I have one and I pet the spikes from the tail to the head and it kinda tickles. The spikes by the head feel like a rubber small point.
Bearded Dragons are desert dwellers, so they don't get much water. They can survive these conditions by "reusing" the water that they are able to get. They reuse it by removing the water from their waste before removing it from their bodies. Instead of urine, they have a chalky white substance that contains no water. When it rains in the desert, it is not usually a heavy rain. So they need to get as much water as they can out of it. To do this, they stand high on their back legs and lower on the front ones and then they duck their head. The water will travel through the spikes that direct the water to their head where it runs between the eyes and right onto the tongue that is going in and out of the mouth to collect the water and bring in.
They have special scales that look like spikes on the sides of their body, throats, necks, and heads. These spines look a little like a beard, and that is where a bearded dragon gets its name. If a bearded dragon is scared, it will flatten its body against the ground, puff out its spiny throat, and open its jaws to make itself look larger.
So technically they have them for defence - and to pose as a threat to predators.
If it feels threatened, angry or annoyed a bearded dragon shall puff out the beard to make itself look more intimidating. If this happens it is best for you to leave it alone.
They're for defence. They deter any would-be predator from picking up the lizard.