just did some search on the internet and found that raisins can be poisonous if taken in large quantity.
http://www.dogbreedinfo.com/grapeandraisin.htm
If your dog has ingested large quantities of raisins or grapes, (s)he will immediately begin to vomit repeatedly, and will become extremely hyperactive and jittery. After about 24 hours, the dog will become lethargic and depressed. (S)he may experience abdominal pain and may stop urinating, drinking, and/or eating. (S)he will also become dehydrated. Both his/her vomit and feces will contain partially digested raisins or grapes. His/her breathing may become irregular, and (s)he will also become hypercalcemic (high calcium concentrations) and hyperphosphosphatemic
Personally I wouldn't be worried if Beanie doesn't show symptons of food poisoning, but if you are worried than you should take him to the vet as it is always better to be cautious.