My female dog is aproximitely 10 years old. I understand old age can change your dog. She always want to be alone and has not been herself I'd say for the last 4 moths or so. This is not my worry. My worry is, I have not been around during the day to see if this problem accurs, but at night she comes out of hiding... She becomes very skiddish and will literally throw herself on you. She begins shaking intensily and pants and does not stop for the rest of the night. She doesnt eat or drink she just paises and shakes and pants. There is nothing that makes it stop. Should I get her in to a vet?