About a year ago I went down a rabbit hole trying to find out why grapes were listed as toxic for dogs. I found many many anecdotal cases of dogs eating grapes without harm. A few reports of dogs dying after eating grapes. A couple of studies concluding grapes were toxic based upon a rather astonishingly small number of cases. Mostly I found references to references to references ad nauseam where the certainty of the claims increasing proportionally to their distance from any actual data.

I ended up feeling like they are about as toxic as peanuts are to humans. Maybe quite bad for some, evidently harmless to others.