Taking Fido to a backyard barbecue or party? Remember that the food and drink offered to guests may be poisonous to pets. Keep alcoholic beverages away from pets, as they can cause intoxication, depression and comas. Similarly, remember that the snacks enjoyed by your human friends should not be a treat for your pet. Any change of diet, even for one meal, may give your dog or cat severe digestive ailments. Avoid raisins, grapes, onions, chocolate and products with the sweetener xylitol.