Hi all concerned. I took Keeko to the vet, and she observed him in the kennel for 3 hours, suspecting he would vomit. He did about 4 times, and she gave him an allergy pill. I found out he had eaten peanuts from my eight year old the day before. Today he was still lethergic and hadn't eaten although he wasn't shaking anymore. I took him back to the vet and she said to wait a little more and give him nutrical. Then this afternoon I forced fed him a little chicken broth and gave him a bath. Afterwards, when he actually went on a full walk he pooped all "peanuts"! He looked much better after that and actually ate his dinner. I think he feels much better. Thanks to all who replied.
