Interesting read :-) With cats, apparently one can spray water on them when they're at the border to ones garden, and eventually, also when you aren't there, they still think they'll get water on themselves if they go outside the garden. So they don't -- a border has been created in their mind.

I wonder if that works with goats, instead of the gate? I guess not.

Maybe also doesn't work with smarter cats, hmm.

(I suppose it's not your boy in the video?)

> the stripped area can be bridged with thin shoots embedded into the bark on each end of the open wound

Didn't know, I was surprised to read that it actually worked :-)