Dogs Only Medical Centre provides free medical services for dogs. However, this applies only for homes with Weimaraner RescueCollie Rescue and the Franklin County Dog Shelter and those in Police departments. Read more on http://www.dogsonly.us/COMMUNITY-SERVICE.html.
Seizures are common for Chihuahuas. I have 4 & 1 experiences seizures. Tried & true treatment: when the dog goes into a seizure put honey on your fingertip & feed it to the dog. As much as a teaspoon if needed.