I have a problem with my cousin's rottie's...he's rottie's now is 11 months old but so thin and small for a rottweiler breed..wat i know is,his dog just vaccinated for only one time..i guess it was when his rottie at 1 or 2 months..thats the last vaccinated.. Is it because of that his rottie not big enuff like other rottie..im very concern about his dog..is there any way to help his dog..or maybe take any vaccination..but im worried if we give his dog a vaccination, it will harm him..is there any suggestion what can we do to help his dog..but his dog is very active like other dogs..only that is he is very thin and not big enuff for that breed..To anyone concern plz give som suggestion.TQ.