Wow, that’s a good question!! ACV won’t hurt the dog — it actually helps with digestion (especially in senior dogs). All of my dogs get ACV, with their food, regularly. BUT, I don’t know if it will momentarily shift the skin ph. My guess is yes it would — a dog’s skin is alkaline and ACV is definitley acidic. But, because it is also antiyeast, antibacterial etc I think the temporary ph shift would be of no concern.. Hopefully others will post if they disagree or have relavant info..
PS — Toxed is right!!! I use garlic like your mom uses ACV :)…
