www.petfoodindustry.com/blogs-columns/adventures-in-pet-food/blog/15636372/the-state-of-pet-obesity-spoiler-alert-its-not-good
Weigh pet. Weigh food.
Pet gain weight? Feed less.
Pet lose weight? Feed more.
Pet weigh same? Feed same.
Not work? Talk vet.
Hotel? Trivago.