I gave my dog Princess, (a 9-month old 5-pound female Maltese) a bath and noticed she had a few fleas. I picked off the few I found on her and decided before it got bad to buy this flea medication. I went to the store and bought this medication thinking it would be ok for her...boy, was I wrong. My husband helped me apply the medication to her back as directed from the shoulder blades to the base of her tail and within 30 minutes she started running around like her back was on fire. Then came the trouble breathing and the weezing. Her personality completely changed and I could just tell she was in pain. Then my husband and I noticed the color of her tounge turned from a deep pink color to a very pail almost white color. This when we really discovered that she was not getting enough oxygen and having a bad reaction to the medication. We immediately took her to the Vet Emergency room and the Doctor notified us that just e few days prior to us bringing our Maltese in, that someone else had brought in a small Yorkie that had been given the same exact medication with the same symptoms. Our little Princess had to stay in the hospital overnight and was given an IV to help her. They also had to shave the hair on her back to make sure all the medication was removed and gave her another bath. The docotr said that if we wouldn't have brought her in when we did that she would have started getting ceisures that can be fatal. Please, be advised NOT TO USE THIS MEDICATION FOR YOUR DOG>>>>IT WILL MAKE YOUR PET SICK!!!