Well, I've been putting my two cents in to everyone else's threads, now it's my turn to ask for help! My puppy, Scout, just turned 8 months old. She was crate-trained when we got her and has NEVER had an accident in her crate, and house-breaking went pretty smoothly... accidents became more and more rare after the first month, and now she stays home for 8-hour days in her ex-pen in the kitchen and holds it all day. She now knows how to tell us when she needs to go out (she sits by the back door, whimpers if we don't notice right away), so on the rare occassions when she does have an accident it's because she drank a lot of water, and we just weren't paying attention.
However, we left her at my boyfriend mother's house this weekend, and it was as if she'd never had any house-training at all!! I guess she just kept going in the house all weekend. Do you think she is just confused and doesn't understand yet that if she can't go inside in her own house, she can't go inside anywhere? If so, how do I teach her this? Or do you think it was something more like seperation anxiety due to being alone in a strange house?