I would call the vet to see if vomiting 3 hours after giving the medicine would mean he would need another dose. I'm not familiar with heartguard - my dogs get Interceptor. When you call, mention the heat.
There are some days it's too hot to take the dogs in the car even with the AC on. Sometimes I even run the car for a minute first to get the air going. Then Sammy sticks her face in the AC the whole way anyway.
You might try a car seat, so that he can see out the window. That might help.
I don't know what to do for him, except watch him and make sure he is drinking and peeing. That would mean he's not dehydrated. Others will have better advice for that. |