The word “sustainable” is doing an enormous amount of work on pet food bags right now, and it does not mean the same thing twice. One brand is talking about its cardboard box. Another is talking about crickets. A third is literally brewing meat in a fermentation tank. They all get the same green label, which is exactly why a shopper can feel good and confused at the same time.
So instead of another list of eco-friendly brands, here is the more useful thing: a map of what “sustainable” actually refers to in each case, so you can match the claim to what you care about, and a reminder of the one standard that has to hold no matter which lane you choose.
Why pet diets ended up in the climate conversation at all
This started with a number that surprised people. A widely cited UCLA study estimated that the average commercial pet diet accounts for roughly a quarter of the total environmental impact of domestic meat consumption in the US. Add packaging, transport, and processing and your pet’s footprint fills in further. Dogs and cats eat a lot of meat, and meat is the heaviest part of the food system, so their bowls were always going to come up.
That is the engine behind everything below. The catch is that companies have attacked the problem from completely different angles, and “sustainable” became the umbrella over all of them.
Lane one: cut the meat, or change what counts as meat
The most direct approach is to reduce conventional livestock in the bowl.
Petaluma is one of the newer plant-based dog food brands built around this. A study it commissioned estimates that, on average, its product requires 89 percent less land, generates 75 percent fewer greenhouse gas emissions, and uses 54 percent less freshwater than a typical commercial dog food diet. Its food is baked in small batches in Wisconsin rather than pressure-cooked and extruded like most kibble, and it is sold exclusively through the brand’s website.
What is notable is who is buying it. The brand expected converts from other plant-based formulas; instead, co-founder Caroline Buck has said a lot of interest comes from owners already feeding premium meat-based diets who are simply curious. Her read on the demand is that awareness is spreading beyond a single demographic: plenty of people have cut back on their own animal-product consumption without realizing their pet may eat far more meat than they do, and that many dogs can thrive on a plant-forward diet.
Then there is the more radical version of the same idea. Because Animals is developing lab-grown, cultured meat to remove the animal from the process entirely, with formulas the company says will be built from proteins aligned with what cats and dogs evolved eating. It is the far end of the innovation spectrum, but it is the same goal: keep the protein, drop the livestock.
Lane two: swap beef and chicken for insects
Insects are the breakout category, and the land math is the pitch. Mars introduced Lovebug, an insect-derived brand that notes insect farming uses 80 percent less land than beef production. Lovebug’s formula, currently available only in the UK, is built on black soldier fly larvae plus plant ingredients, in plastic-free recyclable packaging. Cricket-based makers like Jiminy’s sit in the same lane.
The appeal is that you are not asking a dog to go meat-free, just to get its animal protein from a far lighter source.
Lane three: keep the meat, fix everything around it
Plenty of “sustainable” claims are not about protein at all, and that is fine as long as you know that is what you are buying.
The Farmer’s Dog focuses on packaging: its delivery box is recyclable cardboard and its insulation is biodegradable enough to compost or dissolve in the sink. Another Mars brand, Karma, is zero-waste and built around a plant-first philosophy (about 60 percent plant proteins and superfoods, supplemented with fish and chicken) while diverting all production waste from landfill. And Royal Canin’s partnership with TerraCycle lets owners drop empty dry-food bags and wet-food pouches at participating clinics and retailers, where they are recycled into things like dog-park benches and agility equipment.
This is the important asterisk: sustainable does not automatically mean meat-free. If you believe strongly in a carnivore-appropriate diet, options with reduced or responsibly sourced meat and lighter packaging still count.
The one rule that outranks the green label
Whatever lane appeals to you, the nutrition has to be right first. A bag can be the most planet-friendly product on the shelf and still be a poor daily diet if it is not complete and balanced.
“Sustainability is a great tiebreaker, but it is never the first question,” says Dr. Priya Nair. “Before anything else, confirm the food is complete and balanced for your pet’s life stage, that a qualified nutritionist stands behind the formula, and that nothing essential is missing. A green claim does not substitute for that.”
This matters more with novel ingredients, because the rulebook is still catching up. Regulators have historically lagged the innovation here, which has pushed the research burden onto individual owners. Looping in your veterinarian before a significant diet change is the right move in any direction you are leaning.
What’s new since this was written
The regulatory picture has moved, and in the direction these brands wanted. In 2024, AAFCO formally cleared a mealworm-based ingredient for use in US dog food, joining black soldier fly larvae, which was approved a few years earlier. That is a real shift: insect proteins now have a clearer path onto American shelves rather than sitting in a gray zone.
Cultured meat is also inching from concept toward reality. Bond Pet Foods, which is partnering with Hill’s, has run feeding trials of its brewed, fermentation-made protein and is pursuing regulatory clearance, with hopes of bringing a product to market around 2026. It is not on shelves yet, so treat it as a near-horizon development rather than a current option, but the “lab-grown protein in the bowl” idea is no longer purely theoretical.
The takeaway has not changed, though: match the claim to what you care about, and make complete-and-balanced nutrition the non-negotiable underneath it.
References
- Okin, G. S. “Environmental impacts of food consumption by dogs and cats.” PLOS ONE, 2017.
- “AAFCO greenlights mealworm ingredient for use in US dog food.” Pet Food Processing, 2024.
- “Hill’s seeks cultured meat pet food ingredient from Bond.” Petfood Industry.
