Just wondering how intelligent are guinea pigs? Have discovered already that JohnAnderson can open my livingroom door if it isn't shut properly by opushing it with his fornt paws. But just now he has just escaped from his indoor pen, caught him, put him back in again and watching him and he's taking hold of the bars with his teeth, pushing them as far into a corner as he can and then pulling them upwards to try and get them open! Cheeky monkey! So not like it was an accident he got out.