[anonymous]

Your vet was speaking specifically to the treatment of your dog, an animal that he examined.
That does not mean that advice would work for the OP’s dog.

Ps: When you cover up an open wound sometimes you encourage bacteria and infection to flourish.
So, it depends on the location of the wound and other factors determined by the vet that is treating the dog as to what would be best.
Just my opinion, not to be taken in lieu of medical advice provided by a veterinary professional.