Mark Carroll wrote:

John Doe wrote:

The small cat took to it immediately.

Probably should've done that a LONG time ago.

PRELIMINARILY speaking, it's marvelous.

Very glad you seem to have found a mitigation! Thank you for sharing.

Now the small cat is using it when the big cat plays too rough (like
always). No more need to referee. No need to pay constant attention. I
thought their Skyway provided an adequate sleeping place even though more
restricted, but the small cat has slept in the private room since I began
using the latch.

Need to keep Toobig's claws clipped so it can't hook the small cat when it's
slipping into the private room. Coincidently, Toobig is the easiest cat in
the world to clip its claws, it has no fear of humans (or even a vacuum
cleaner).

Something like that should be available regardless of the size difference.
But how...





--

I wrote:

My constant supervision has helped over the years, sometimes they even
play (while supervised), but my aggressive cat's natural tendency is
always lurking. She is a great cat to people, she is not really a bully,
she's just ETERNALLY AGGRESSIVE against anything that moves and isn't 10
times bigger than she is.

I found another humane way of stopping my big aggressive cat from
constantly annoying my smaller cat. It will require testing, but it
looks promising. Just leave a door (bathroom with a view to outside, or
whatever) open enough for the smaller cat to get through but not big
enough for the larger aggressive cat. That should work if the victim is
much smaller, like here.

That would be nice since it would be on demand.

Other such possibilities would include some sort of ramp/bridge that
only allows a certain weight...

The small cat gets lots of use out of the Skyway where the aggressive
cat is mostly prohibited from going.

Have fun.