Our cat who is 6 or 7ish (she adopted us!) has done her business indoors for the last 3 days. As far as we can tell she's in good health and is her usual self. The poo is being done in the same part of the house each time (wooden floors thankfully!). Cat flap is open 24/7. My only thought is that she could be feeling threatened by one of the neighbours cats. Anyone have any ideas why she might be doing this and how to stop it? Thanks in advance for any suggestions