ladybrasa
Songster
I think it’s just his caution instincts kicking in and reacting to the movement before realizing it’s okay. Have seen former ferals and long time strays do this. Cats are both predator and prey and have instincts/reactions of both. Though, I guess just make sure the areas don’t have a wound just in case. As some cats are hypersensitive, especially on the back, just watch his response. As always, it’s awesome you are helping out, but do please try not to get bitten by accident or otherwise! Sounds like you are sensitive to his behavior and cues so you should be fine
Good luck!
