I have a 4 year old pom who has always been health and active. loves to play and run. In the last week, I think she has had 2 seizures. she looses muscle control in her front legs, her eyes look wild and she shakes like she is scared to death, then throws up twice. It lasts about a minute then for about another 5 minutes she seems dazed. Right after that she goes to sleep for a little while then wakes up fine. wants to play and seems happy. What would cause this? Please help!