Scott T, my 5 year old Labrador Retriever had a similar situation. Last night, 24 hours after having Frontline Plus applied his head started shaking back and forth like he was starting to have a seizure. It happened three times in 15 minutes. Thankfully, he did not end up having a full seizure, but he had no control over his shaking and it has not happened again since. He is an otherwise healthy dog and this has never happened before. After doing a little research online, I am convinced that this strange neurological incident was related to Frontline Plus, and we will no longer be using this product. Thank you for your post
