My ex wants to get a dog for our daughter (14yo). He wants it to be her responsibility so has asked if the dog can stay at my house occasionally (for the odd night here and there). I have never been interested in dogs and have always been quite wary of them so of course I don't feel comfortable with having one. Besides, I don't like the idea of cleaning up after a dog which is why I have never considered having one. Initially when he mentioned it to me, he said he hadn't told our daughter that he was asking if it would be okay. He has since told her and now because I don't want it in my house, she blames me for not being allowed to have a dog at his house. She is behaving like a spoilt brat. The dog he wants to get is a cockapoo or a cavapoo which doesn't destroy your house. It would be left unattended for 6-7 hours per day as I work. I feel he is using manipulative tactics and is trying to make me feel guilty because it will be good for her physical and mental wellbeing and she really wants it but if I don't support him, she can't have it. I could understand if it was a family pet prior to separation but it's not. Should I feel guilty for saying no?