Sorry to hear Echo had a seizure. My lab had her first seizure at 3 years of age. It is not normal for dogs to begin having seizures later in life so I looked into it more after her breeder reported no history in either mating side. Turns out I had just switched to a different flea and tick medication. It was Bravecto. At the time, there was no warning with this product with regards to seizures. Now there is a warning from the manufacturer. If you are using Bravecto, or any medication containing fluralanar I would stop using it immediately. My dogs seizures went from less than 5 minutes about every 4 months for about two years, and now the last two have lasted almost three hours. They are full grand mal seizures, locked jaw, splayed toes and rigid extremity extension. She will appear to come out of the seizure but when she starts to try and move it sets her right back into it again. There are no lasting side effects that I know of, but if she went into an hour long seizure on a warm dove hunt, it may be her last day. The problem with the seizure in warm weather is the dog can not cool them selves down and could very easily overheat and die. Just a warning if your dog does develop regular seizures about hunting in warmer conditions. Pass the word on about the risks of Bravecto and other fluralanar containing products. Please let the viewers know if you were giving your dog Bravecto flea and tick medication. Thanks and good luck with Echo.