We have three bearded dragon's-- two of our girls are about 1 1/2 yr., the other is 9 months old. We have recently moved, but they seem to have adapted already. I actually noticed this about a month before we moved.

Any ways, all of a sudden when they are out of their cages (two live together and one alone) they are getting snarly with eachother and two in particular are trying to dominate eachother and one is continually mount the other.

Yes, I'm sure they're all female, they all have small pores and a nice little pouch under the tail. Could it be that they are going into heat. The one in particular started this behavior increasingly when she seemed to come out of what seemed like brumation. I don't see any signs of having eggs and they have never been around a male. And yes it's the two older ones duking it out.

Thanks for your help.