my chameleon has already fully recovered, and he is eating and drinking properly too.
just like many other chameleons do, he rubs his butt against the branch everytime he leaves a dropping. but during his recovery period, i used to take him outside the cage everyday and let him leave the dropping on a towel, so he could rub against a towel instead of the branch, lessen the chance of opening the wound again.
but after this incidence, he has developed a very strange habit - he does not leave his dropping in cage anymore... once i have left him in cage for few days without taking him out, and he didnt have any dropping in that few days... so i took him out and let him climb in the house, and he had his dropping on my carpet within 5 minutes... this doesnt bother me, but it is very interesting to share with you guys. 