I have a 3 year old female golden retriever she seems to be ill and I am not sure what is wrong. She is an outdoor dog. She has been acting strange for about a day or two. She does not want to eat, is thirsty but vomits soon afterward. She looks sad and doesn't want to be alone. Mostly she will just stand and not move. She is normally very active but is very tired. Her eyes are slightly red and glossy. If you have any idea's please let me know.