Thank you Phebe, though I'm not sure what flooring it is exactly, I can only describe it as black rubbery non-slip mat/tiles??? Nothing gritty or carpets or bristles though. Perhaps just sharp turns and runs (she loves running at full speed) is probably why, the abrupt turns on a nonslip mat. I'm glad to hear they'll heal well, she isn't limping either today either so I wouldn't have known if I didn't check/if they didn't check. Do you think I should take the excess skin thats peeled off partly, safely, incase Precious tries to chew it off??