We bought the Hartz one spot flea and tick treatment for our dog and three cats about three weeks ago. after our dog starting losing alot of his hair and was scraching himself raw we got worried. he also doesn’t seem like himself. he is very lathargic and just doesn’t want to play. when we went to the vet to get the good stuff she told us horror stories of cats coming in with seizures. we are lucky that the kittens haven’t had any reactions to the treatment. i have read a lot of the stories about the horrors that have happened to peoples cats but was wondering if there have been any problems with dogs?