I didn't even think about cats, I think I'd be irrationally paranoid at the sensors failing if I had small pets around. I'd want a gap at floor level as backup,

I didn't even think about cats, I think I'd be irrationally paranoid at the sensors failing if I had small pets around. I'd want a gap at floor level as backup, maybe an aesthetically integrated cat flap. But I've owned remarkably stupid cats before who weren't very environmentally aware. Certainly taught me to close doors carefully and quietly.