<human>: Provide a brief overview of the text.

My husband and I invited a close friend to come stay with us while he gets back on his feet. We'd already had our dog and cat when he moved in. He's been here for about 9 months, and in the past few months my cat and dog have avoided him, casting back furtive glances at him whenever he walks by. They do this to no one else. The cat has now started to poop in places other than his litter box. Today in particular he has been incredibly cuddly, drawing closer to who he is sitting with and staring fearfully at the housemate as he passes by.

I know he has been a little aggressive in the past and we have explained to him that this is not an appropriate way to handle behavior issues in the animals. He has told us that he is not being as rough with the animals as we think. I have trouble believing this based on my pets' behavior toward him and the fact that he hides when he "disciplines" any pet (we have more than just our two).

Would I be overstepping by installing a camera to catch him? If I do, and he is abusing our animals, do I kick him out even though he literally has nowhere else to go? Any advice would be appreciated.
<bot>: Roomie may be abusive to our pets. Can't confirm without a camera, can't confront without proof. Thoughts?