Our 3 years old yellow lab, Mia has been living with my husband and I inside the house ever since we brought her home as a puppy. A hard decision was made when my daughter was born and started crawling when we decided to put Mia in the backyard temporally just until my daughter start walking. This month my husband and I were excited because we finally feel it’s time to have Mia back in the house as my daughter walks pretty steadily now. We gave her a bath last weekend with the Hartz flee & tick shampoo and then applied the Hartz flee & tick med. she was fine the following 2 days until about 3 days ago I just noticed that she looked listless and tired. Then, the next day she did not finish her dinner…we knew immediately that something is wrong. She usual wolf down her meals in few seconds. We walk around the back yard and saw that she has diarrhea, and it was black. We took her to the emergency pet hospital right away. The doctor did x-rays on her and told us that she is bleeding internally. He saw the brown streaks left by the flee & tick med on Mia’s back and asked us what brand we use…was it the brand called Hartz. He also told us about the incidents pet owners experienced with this brand…we were terrified that we have made the same mistake. While he was examining Mia, we rushed home to see what brand we used on Mia, my heart sank we we saw the label on both the shampoo and the med. we brought her home yesterday, my husband slept with her throughout the night, and I couldn’t sleep all night because I have never felt so guilty of letting this happen to Mia. Lesson learned! I will research on unfamiliar brands before I make any purchases…I just don’t understand how those products are still available on the shelves. This is why I wanted to post my story so that at least it provide some caution to other pet owners. I just prey that Mia will survive this horrible ordeal.