Bearded dragon's acting unusual

[KXClavejo]

So I have 2 bearded dragons, and one of them recently started running around it's cage, with its beard black, and repeatedly bobbing its head. It stops for a while, and then does it again. My other bearded dragon, however, is acting completely normal. Any reason behind this?

 

[rlanguid]

Totally normal.
What you're witnessing is your little black beardie establishing dominance. Their beards will generally turn jet black, and they may scurry around a bit, bobbing their heads. Males will often do this as a sign of courtship too, while a female beardie will do a 'waving' motion with her arm, which is also known as a submissive gesture.
How old are your little ones? And as long as the bobbing beardie isn't being aggressive/harming the other, it should be just fine.

 

[KXClavejo]

@rlanguid

Thanks for answering, and they're about 6 months old.

 

[rlanguid]

You must have a spunky little male then.
We always love pictures, so feel free to share them if you'd like! And glad I could help.