My pup was about 2 months old and very active. Long story short we bought the Hartz brand shampoo to bathe him after a muddy play day, within an hour he started convulsing. He was foaming out the mouth and the convulsions continued for the next 2 days. He lost his eyesight throughout this and could consistently shake. He would whimper so much… we couldn’t do much else but cuddle with him and try to make him feel loved. The vets were basically useless. He passed within 2 days. I hate this brand and anyone associated with them.