Bearded dragon babies do take awhile to get used to their owners, some never completely tame down, it all depends on the individual. Also, if you are reaching down towards the dragon from teh cage top, that is more likely to bring out defensive behaviour, as bearded dragons are ingrained to fear anything coming towards them from above (ie preyed upon by birds in the wild). Try approaching from the side.
Also, one month isn't enough time for a dragon to be completely used to it's new owner, some may take 6-8 months, some may calm down for a few months then start acting aggressive/defensive again around 'puberty' then calm down a few months after that. ALl you can do is don't let the dragon's defensive actions deter you from picking it up to hold for a short time. Even if it bites, still pick it up and hold it gently but securely till it calms, then put it back in it's cage, so it associates being calm to return to his cage. Otherwise, if you leave or put it down as soon as it tries to bluff/bite/struggle, it will keep doing that.
Offering tasty treats by hand to your dragon can also help calm them down but it can also cause it to associate your hand to food and it may bite fingers thinking they are tasty worms.
All in all, it takes persistance and patients.
-----
PHLdyPayne
