My dog has recently started pooing in the house despite being housetrained and having hardly any accidents for many years. She recently had a checkup at the vets for some lumps (thankfully benign tumours) and they said she was fine although a bit tense in her abdomen. She gets very anxious at the vets though so it could have been that. Her poos are firm and she can hold on all day when we are at work so I'm wondering if it's a behavioural thing? We have another dog staying with us at the moment and although it started before that it has become more frequent (3 times last week). She has also done it a couple of times at a relative's house recently, again there is another dog there. Has anyone experienced this? Any advice gratefully received!