:lol: Ha ha ha!
Naw, I don't think OP was seriously expecting his beardie to fetch a ball. But he sure did get our attention, which is exactly what he wanted. :mrgreen:
SO! Think of a bearded dragon being kinda like a scaly pig. Built to carry a LOT of fat without any adverse effects. They also don't really move around much. IIRC, they spend much of they day basking, punctuated by an hour or so of rooting around for munchies, and maybe a short sprint after an um-cooperative snack.
We can easily re-create this short period of activity by letting our beardie roam around the house for a bit. For variety, we could also go to the park, being very careful that the dragon doesn't eat anything it shouldn't.