So my little rascal daisy, used to go for her business in her litter tray. But for several years now she is an outdoor cat and does it outside. Today, she had a meeting with two other cats whom we had to coax daisy away from. She didn't seem at all bothered when we got her back inside. But at around 3am, she went into the bathroom and had a poo on the mat. Why is this? She has never done anything like this before. Could it just simply be because she couldn't hold it any longer?