Do bearded dragons grow limbs back?

After 10 years I can tell you. Some do and those that do do it very rarely. I've owned 2 beardies for 5 years and I've seen it once when they got into a spat. Then I looked it up and there are some anecdotes of other people seeing the same thing, but very rarely.

Which is good as its defensive behaviour and apperently few beardies are in situations that warrant such behaviour