Vet tech - it is pretty wrecked, it might fall off at this point especially if it is split to the nail bed. https://www.amazon.com/Dr-McHenrys-Dog-Toe-Treads/dp/B07W99GK6K/ref=asc_df_B07W99GK6K/?tag=&linkCode=df0&hvadid=416713034141&hvpos=&hvnetw=g&hvrand=570996538712015577&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9002341&hvtargid=pla-899879508857&ref=&adgrpid=92223074285&th=1
something like this might help it stay together while it grows out.