Cashews, interestingly, are not actually nuts but seeds. Cashews are part of a poisonous plant family which surprised me to learn includes poison ivy, poison oak, and poison sumac. The common toxic compound is urushiol oil. Dogs are not immune to this substance, as it would seem when they are romping around these poisonous plants. Merely their thick fur provides them a protection of sorts. Ingestion is another matter.
Urushiol oil is found within the cashew shell. The nuts, or seeds, are removed from their shell and processed in a manufacturing plant where the oil is removed. The danger is in eating raw, unprocessed cashews. The "raw" cashews found in healthfood stores, I understand, have been steamed so are actually processed as well.
So are cashews toxic to dogs? I just did not see enough qualified documentation of the danger so I'm inclined to take it lightly. It would be my suggestion that you NOT deliberately feed cashews to your dog if only because there is a question about them. But I would not freak out if my dog consumed one I'd dropped. On the other hand, eating a whole bag would present a worry whereby I would speak to my vet or poison control.
By the way, with respect to my research on cashew toxin it seems there is a much heavier emphasis on macadamia nuts. Moldy nuts (the kind dogs find under nut trees or hidden, winter, bird stash) are most definately a concern. But nuts in general do not seem to be otherwise worrisome. Please do your own research. |