Purina Pro Plan Sport 30/20
Top PickWhat We Like
- 30% protein and 20% fat for real endurance
- Listed for cattle dogs and other working dogs
- Real chicken is the first ingredient
Worth Noting
- Sold only in a 6 lb bag here
- Bag Size
- 6 lb
- Breed Size
- Medium
- Protein And Fat
- 30% protein, 20% fat
- First Ingredient
- Chicken
Read the full review
Thirty percent protein and twenty percent fat is the richest formula in this guide, and for a heeler with a job that's the whole argument. Purina builds this one for sporting and working dogs and lists cattle dogs among them, so the target is a dog that runs, turns, and does it again tomorrow. We're convinced by the match: real chicken first, amino acids aimed at muscle recovery after exercise, and a fat level high enough to fuel a long day rather than just hold a couch dog steady.
The flip side of twenty percent fat is that it rewards exercise. A heeler that herds all weekend burns it; one that does two short walks and sleeps on the sofa can gain weight on the same bowl. Measure the portion instead of eyeballing it, and if your dog is already carrying extra condition, a lighter adult formula is the better move than cutting this one down to a token scoop.
Two practical notes. The bag is six pounds, which doesn't go far with a medium dog eating for a working day, and the small format is why it costs more to feed than the big-bag picks here — order two at a time if you have the shelf space. And because the formula is rich, the switch is the usual moment for loose stools; stretch it over a week and most of that risk goes away. Neither point matters much if your heeler genuinely needs the fuel.
Bottom line: If your heeler works, trials, or runs daily, this is the food we point you to: 30/20 is the richest formula here, and it's the one built around a working dog's recovery.