Allira
As my DM used to say "Mind the paintwork!!"
I say that all the time to Mr Dog 
We've recently had the house decorated, and I don't think there is a single room that doesn't have a chip, a scratch or some other sign of his clumsiness on the paintwork. I think it's because he doesn't realise that he's not as strong as he used to be, and thinks he can carry things more easily than he actually can, so it ends badly.
I found a tiny bottle of white gloss paint on Amazon - a bit like a bottle of liquid Tippex - and regularly touch up the dado on the stairs, which seems to see the worst of his apparent vandalism. It's the best find I've had in ages.