We bought a puppy today from a pet store and he hadn't had a single stool for the last 6,7 hours. But an hour ago, he had a seizure and foam was coming out of his mouth. I did a massage to him while he was having a seizure and he pooped some really hard stool and pissed. Pet doctor came and made his poop come out more and gave him a medication for fever. She said she doesn't see any respiratory problems, but he is, for sure, having a fever. I'm taking him to vet tomorrow. But I'm worried whether he can make it through the night. Does anyone have an idea what he is experiencing?