Many moons ago I lived in a canal cottage, the border was only about a yard away from the canal tow path.
We also had a cat, a fat cat, very large.
It was free to roam anywhere it wanted, no road traffic, no neighbours for miles. It was a 'free range' cat.
It did kill some little birds, and a few lovely little field mice, not for food , she was very well fed.
It was just for sport, then she would bring these dead things to our back door and leave them there, a sort of present?
Ducks and swans? The fat cat would watch these all the time from under the hedge, she would wait for them to venture onto the tow path and settle , then sneak up on them, just to tease, they would go berserk and try to attack, big wings flapping about all over the place,but even fat cat was far too fast, they couldnt get near her.
Swimming? She was a great swimmer, I have seen her jump into the water swim towards a canal boat , jump aboard take a ride for a few yards then run back home along the tow path.
Ah those were the days!
We have two cats now, they are not allowed out, they are indoor cats, just not safe outside around here to let cats out.
Dont bworry babout bthe cat fallingninto the canal, a cat bcan get out of water a lot faster tha it gets in, if they dont want to be in the water they can do a fantastic high jump out.