Are these berries poisonous for my cat? (no, he hasn't eaten any, but if they would be dangerous for him, I'd remove that Bush, just to make sure...)
We had those berries in our yard, as kids and were told never to eat them, and they never seemed to be a problem with any cats, including ours. We lived in a track and there were lots of cats. And remember a cat is a self survivor, so the are smart.