It’s Unlikely for Cats to Get the Parvovirus from Dogs
The very few research studies that have been done on this topic so far suggest that it’s possible for cats to get the parvovirus from dogs but only under extreme circumstances. For example, one parvovirus study found canine parvovirus in the fecal samples of cats that live in animal shelters.
Cats and dogs deal with separate strains of the parvovirus. Cats deal with the feline panleukopenia virus (FPV), while dogs deal with the canine parvovirus (CPV). Studies such as the above might be suggesting that it is possible for cats to be infected by mutated strains of the canine parvovirus.
As an owner of both a cat and a dog, you don’t have to be majorly concerned about the risk of parvo transmission. Yes, there might be a slight risk but that risk is assumed to be very low and unusual. It would, however, not hurt to side on the err of caution and have your cat separated from your dog if he contracts the parvovirus.
You should also quarantine new dogs that are brought from the animal shelter as these dogs have the highest risk of catching the parvovirus.