beef lung
Beef lung is a light, lean organ — the workhorse of single-ingredient dog treats. How Bowlmark scores named organs.
Also appears on labels as: beef lungs · dried beef lung
What it is
Beef lung is cattle lung tissue: very lean, protein-rich, and airy when dried, which is why dried lung puffs are a staple of the single-ingredient treat aisle. In recipes it contributes lean named protein.
Why it's in pet food
In treats, lung delivers big pieces at few calories — useful against the treat budget. In food, it is economical named protein. Either way the species is on the label, which is the part the engine cares about.
How Bowlmark scores it
Scores are deterministic math over the printed label — the rules below apply to every product identically, and nothing estimates or fills in a blank.
Beef lung is a named protein source to the engine — the word "beef" is what it reads. When it is the first ingredient it earns the 15-point fresh named-protein bonus on the ingredient-quality pillar; in any other slot it earns nothing, because only named meals score in the second and third slots. No deduction applies — an organ sold under its own name is the transparent version of what "by-product" hides.
Foods that list beef lung
Ranked by score where scores exist. Placement here is never sold.
Sources
Related ingredients
Further reading
Cite this page
Bowlmark. "Beef lung in pet food — what it is and how it scores." https://www.bowlmark.com/ingredient/beef-lung
- Engine
- Methodology engine v1.1.0 · config 13c99e2f
- Verified
- Last verified August 9, 2026
No stored score to stamp yet — the engine and config above are the ones a scan runs today.