Posted by Waste Happy
on September 10, 2026
Quick answer: medium dogs, meaning 25 to 50 pounds, produce roughly 0.7 to 9.9 ounces of stool a day on dry kibble, depending on the breed and its weight. They go about as often as any other dog, usually once to three times a day.
What is different about medium dogs
Medium dogs sit in the middle on both counts: stool is usually well formed, and output per pound is between the small and large breeds.
Medium breeds compared
| Breed | Adult weight | Daily output |
|---|---|---|
| Cocker Spaniel | 20 to 30 lb | 2.3 to 5.2 oz |
| Miniature American Shepherd | 20 to 40 lb | 2.3 to 6.5 oz |
| English Cocker Spaniel | 26 to 34 lb | 2.8 to 5.8 oz |
| Whippet | 25 to 40 lb | 2.7 to 6.5 oz |
| Brittany | 30 to 40 lb | 3.1 to 6.5 oz |
| Poodle | 4 to 70 lb | 0.7 to 9.9 oz |
| Border Collie | 30 to 55 lb | 3.1 to 8.3 oz |
| Australian Cattle Dog | 35 to 50 lb | 3.5 to 7.7 oz |
| Bulldog | 40 to 50 lb | 3.8 to 7.7 oz |
| English Springer Spaniel | 40 to 50 lb | 3.8 to 7.7 oz |
| Siberian Husky | 35 to 60 lb | 3.5 to 8.8 oz |
| Portuguese Water Dog | 35 to 60 lb | 3.5 to 8.8 oz |
How we worked it out
How much a dog produces tracks how much it eats, and how much it eats scales with body weight, but not in a straight line. Vets estimate a dog's daily energy need as 70 times its weight in kilograms raised to the 0.75 power, which means small dogs eat more per pound than big ones, and so produce more per pound too. We ran each breed's weight range through that formula, divided by the energy in typical dry kibble, and applied the measured ratio of stool to food eaten. As a check, the model predicts 62 to 105 grams a day for a 19 pound beagle, and lab beagles of that weight on kibble measured 90 grams.
Diet moves the numbers a lot. In one study of lab beagles, dogs on fresh cooked food produced about 38 percent less stool than on kibble, and dogs on raw diets about 56 to 59 percent less (source). Every figure on this page assumes dry kibble.
What that means for the bag
For a medium dog, thickness matters more than size. You want a bag you cannot feel warmth through, with enough length left over to tie off cleanly.
For your own number, the bag quiz is faster than any table.
Breed guides
English Cocker Spaniel · Poodle · Border Collie · Bulldog
Other sizes
Toy dogs · Small dogs · Large dogs · Giant dogs · Every breed
Estimates for healthy adults on dry kibble, from breed weight ranges and published veterinary figures. Ask your vet about your own dog.
