I would ask my vet, maybe several vets before I did that. I have use the doggie Advantage on my cats for YEARS and so have a lot of other PT'ers. My vet knows I do it, even supplies the syringe for me to use. I have always heard the Advantage is the ONLY one you can do this with. We have used it on ferals and strays and on our own with no consequences... It is a matter of using the correct dose.

Check with your vet as I said. Don't try it until you know for sure, have researched it fully, maybe even call the company that makes it and ask them about the formular for the doggie verses the cats..