I rehabbed a bag that had cat scratches. I sanded very carefully with a super fine grit sandpaper and very fine steel wool. I tried using leather filler to fill the holes, but none of the fillers worked that well. I think I ended up using a bit of dye mixed with conditioner to try to blend in the spots.Maybe some of the larger scratches could be glued down. Some of them are more like claw Pokes. but not deep enough to go through or anything. Luckily this bag is made thicker on the bottom. Even though it looks horrible it does seem fairly superficial. i'm still pretty bummed though . and yes i would be extremely careful if i tried some light sanding (probably with an emery board or something) I figure it's already pretty scuffed on a lot of the bottom but maybe could be redyed later or something.
Here's a post about my bag https://forum.purseblog.com/threads/coach-rehab-and-rescue-club.833400/page-801#post-30558078