My two year old spayed female37 lb rat terrier had an immediate sudden change, she went from normal to having her inner eyelid partially come across her eyes and couldn't balance or walk correctly (kind of like she was drunk). She did not have access to any medications, chemicals or automotive products and the only thing she ingested was about a teaspoon of peanut butter (which she has had several times with no reaction). I took her to our vet and she couldn't find anything wrong with her upon a simple examination, do you have any suggestions as to what may have happened or what we should do now. She is current on all her vaccinations and is a totally active normal dog other than this. She seems fine now (12 hours after the event). Thanks for your help!
Optional Information:
Age: 2; Female; Breed: decker rat terrier
Already Tried:
keeping her quiet