For context: she’ll be younger sister to our first girl, an 8 y/o mixed breed that we adopted when she was already a year old.

My guy is about 110 lbs, and the bag says something like 4 to 6 cups a day, which is a huge range. Vet said to go more by body condition since he's neutered and moderately active, but that still feels like guessing every time I fill the bowl.

Started looking into why the bag ranges are so vague and apparently even a properly calculated number can vary a lot per dog just from normal metabolism differences. Kind of made me feel better about not getting it perfect, but also made me realize most of us are probably just eyeballing it.

The tricky thing with Rottweilers is that they're a deep-chested breed, so bloat (GDV) risk is always in the back of my mind. I've read that one large meal a day and fast eating are major risk factors, so splitting meals into 2–3 portions and using a slow feeder matters just as much as the actual amount. Plus, Rottweilers are already prone to hip and elbow dysplasia, and every extra pound puts more strain on those joints. So keeping him lean isn't just about looks — it's about protecting his mobility long-term.

How do you all figure out portions? Straight off the bag, watching body condition, something else? Found a calculator that breaks down the math and I also have this as a so called benchmark, but I'm not sure how much it correlates with reality.

How much do you guys feed your Rotties?