There are several food types that should never be fed to a Rottweiler under any circumstances.

- Grapes and raisins
- Avocado
- Hops
- Xylitol
- Apricot stems, leaves, and pits
- Peach stems, leaves, and pits

- Marijuana and edibles
- Coffee and caffeine
- Mustard seeds
- Potato leaves, stems, skin, or any green parts
- Onions and chives
- Garlic

- Apple seeds and cores
- Cherry steams, leaves, and pits
- Other nuts, including almonds, walnuts, peanuts, and pecans
- Coconut and coconut oil
- Rhubarb
- Macadamia nuts
- Salt and salty snack foods

- Citrus fruits
- Raw eggs
- Chocolate
- Alcohol
- Milk and dairy
- Licorice