Never feed grapes or raisins to your dog. Grapes and raisins contain toxic compounds that are harmful to dogs. They have the potential to cause rapid kidney failure and death (. Foods in this category can cause moderate to severe health problems, which means you should never intentionally give them to your Rottweiler.
In addition to visiting with a veterinary doctor about what not to give your Rottweiler, be prepared to spend a lot of money to meet the dietary needs of dogs and avoid the possibility of the dog pouncing on any food, including those that may be poisonous. Salty foods, such as those found in pretzels and potato chips, can cause mild dehydration or salt poisoning in the Rottweiler. When your Rottweiler consumes any of these yellow foods, consult a veterinarian first for professional advice. Take your Rottweiler to the vet if he shows signs or if you know he has eaten one of these dangerous foods.
Cocoa contains two methylxanthines, caffeine and theobromine, which are highly toxic to Rottweilers and can become deadly quite quickly. The yeast in bread dough could also multiply and cause alcohol poisoning, which could be dangerous considering that Rottweilers are very sensitive to ethanol.