I found this on a scientific paper
"Because of its low toxicity and highly effective antimicrobial activity, topical PVP-Iodine applications have particular advantages in treating skin infection of cats, dogs, or
other animals that lick wounds .PVP- Iodine has also been found to be highly effective in treating bacterial and fungal fish eggs, thereby increasing the hatching yield. Additionally, scrub and antiseptic solutions containing PVP- Iodine have been reported as highly effective for use on dogs, cats and horse s for various pre-surgical procedures".