many years ago I had the best dog in the world, she was a cross bred medium sized dog. we identified about One hundred different commands she totally understood,she was the easiest dog to train, you only had to show her something once. One day when she was being very naughty and hassling my hens, I had to tell her off twice and give her ONE smack. She NEVER let anyone else including me hassle those hens for 13 years after.
She also was a rescue dog, some years after getting her I managed to find her original owner, who said she was the naughtiest dog in the world, totally uncontrollable.
Now what does that say?
i also had a rescue cat, put down a few months ago, who totally loved people!!taking him to the vets was a delight, he loved the vets.
He certainly behaved as if he understood people.
i now have some very nice dogs and cats.
what do these cats understand? I suspect very little.
the dogs? they act as if they understand lots, but I suspect it's an evolutionary quirk...
LOVED the raccoon story, very moving.