Question: are sharpies toxic to dogs?
Answer: I am neither a vet nor own dogs, but: the MSDS for the Sharpies brand marker lists Butanol (71-36-3), Propanol (71-23-8), Diacetone Alcohol (123-42-2), Ethanol (64-17-5), pigments, dyes, additives and is apparently non-toxic under “normal use conditions”.