I too, think that they sometimes potty where they shouldnt, just to be bad. Especially if they feel they arent getting their needed attention. At 6 1/2 mo's, I wouldnt expect her to be fully potty trained yet, and I never allow Meka to get up on our bed/furniture without me being with her... She's 8 mo's and does great, but I know she's still a pup and as with small children - there's ALWAYZ gonna be an accident from time to time
