A. Your local pet store will sell many varieties. Unfortunately, I'm not sure of your location so I can't recommend what is available locally.
Clerks at the store should be able to assist you. Remember some products are safe for dogs & cats, some may only be safe for one or the other. If you have multiple animals to treat, it may be easy to try a topical flea ointment (most have 1 dose, good for a month) but you must buy a specific product for dogs only, and one for cats only, and by the proper weight dosage.
A. Instead of a shampoo, consider a topical preventative such as Frontline. It is made for cats and dogs, is very safe and will last longer than a shampoo. Certain insecticides in dog flea shampoos, such as permethrins, can be harmful to cats. Reading labels is important before using any shampoo on a pet.
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