Sounds like a 3rd party mod for Rezillo's Canis Woof? I'm not familiar with that one.
At it is what it does is Add new tails ears chest fluff updates the Updated fur and paw texture maps and roughness Added body shrink blendshapes and Resculpted body, hands, face, and paws It brings it to upto par with most models you see now
https://archiefox.gumroad.com/l/CanisRevamped
