Grapes & Raisins: Toxic to Dogs Pawstalk Animal Communication & Reiki Posted on March 6, 2010 by Lisa LarsonMarch 21, 2016 Do you have dogs? If you don’t listen to anything else, listen to this: DO NOT FEED DOGS RAISINS OR GRAPES. You can also see this posting on Snopes. ******** It appears that raisins and grapes are to dogs what lilies are to cats: Keep your babies safe. Learn what is toxic to your pet.