what is a cold-pressed dog chew?.

a cold-pressed dog chew is one that's made by pressing the ground ingredients together at a low temperature - typically around 40 to 50°c - rather than cooking them at the much higher heat used to make ordinary kibble or baked treats. the mix is pushed through a die under pressure for a few seconds, the friction warms it slightly, and that's it. no steam, no oven, no 140°c.

with a food, people choose cold-pressed mostly for digestibility. with a supplement, the reason is narrower and, frankly, more important: the ingredients you're actually paying for - live probiotics and omega-3 oils - are the ones heat damages first. so how a chew is made isn't a marketing detail. it partly decides how much of the good stuff is still there by the time your dog eats it.

what "cold-pressed" actually means

"cold-pressed" describes a process, not a recipe. the ingredients are milled to a powder, blended, then compressed through a shaped die. the only heat involved is the small amount generated by friction and pressure, so the mixture stays low - uk cold-pressed food makers like forthglade cite roughly 40 to 50°c, and no added steam.

compare that with extrusion, which is how most dry dog food and a lot of chews are made. a dough is forced through heated, rotating screws under high pressure, cooked and puffed up in the process, then dried in an oven. published figures for pet-food extrusion put the cook temperature at roughly 90 to 150°c, with the food inside for only a short time - often measured in seconds - before drying. baking sits in a similarly high-heat band.

one honest caveat: "cold" is relative. a cold-pressed chew isn't raw, and it isn't literally cold - it's just made without the fierce cooking heat of the alternatives. that's the whole claim, and it's worth being precise about it.

cold-pressed vs extruded: the temperature gap

method	typical temperature	how it works	steam
cold-pressed	around 40-50°c	milled ingredients pressed through a die for a few seconds	no
extruded (most kibble and many chews)	around 90-150°c	dough cooked through heated screws, then oven-dried	usually
baked (many treats and chews)	high oven heat	mixed and baked in an oven	no

the number that matters is the gap. a cold-pressed process tops out around body-temperature-plus, while extrusion and baking run two to three times hotter. for robust ingredients that gap barely registers. for fragile ones it decides everything.

why heat matters for what's inside a supplement

not every ingredient cares about temperature. minerals shrug it off. glucosamine and chondroitin are reasonably sturdy. but three of the things people most want from a daily chew are exactly the things heat is hardest on.

live probiotics

most probiotic bacteria are surprisingly delicate. a review of probiotics in pet food notes that temperatures above 45°c can harm most strains, and that pasteurisation at around 60°c can cut viable counts by up to 3 log cfu - that's a thousand-fold drop. push into extrusion territory and the more delicate strains simply don't make it.

there's a real exception: spore-forming bacillus strains form protective spores and survive heat far better than fragile lactobacillus or bifidobacterium, which usually need microencapsulation or a low-temperature process to have a chance. so "contains probiotics" and "contains live probiotics at the bowl" are not the same sentence. we go into this properly in are the probiotics in your dog's chew already dead?

omega-3 oils

the long-chain omega-3s epa and dha - the ones from fish oil and green-lipped mussel - are chemically fragile. in one study on atlantic salmon oil, epa dropped from about 6.1% to 2.2% and dha from about 4.1% to 1.7% after just two hours at 50°c, and fell further at 150°c. heat, oxygen and light all speed up that oxidation, which is what "rancid" means. an omega source cooked at extrusion heat, or left exposed, is a weaker omega source. that's part of why processing comes up in our green-lipped mussel for skin and coat guide.

vitamins

heat is uneven on vitamins too. reviews of extrusion in dry pet food report losses ranging from only a few percent for some b vitamins up to well over half for vitamin a, with vitamin e and several b-group vitamins also hit. it's exactly why extruded foods are routinely sprayed with a vitamin coating after cooking - to replace what the process removed.

does heat destroy dog supplement nutrients?

partly - and that "partly" is the honest answer. some ingredients are robust and come through cooking largely intact. others - live cultures and omega oils especially - degrade with heat, oxygen and time. cold-pressing exists to protect the fragile ones, by never taking them up to the temperatures that break them.

but cold-pressing is not a magic word, and any brand that treats it like one is overselling. a gentle process protects a good dose; it can't invent one that isn't there. freshness and packaging still matter, because omega-3 keeps oxidising in the tub if it's exposed to air and light. and the only thing that tells you what your dog is truly getting is the amount printed on the label - which is a maths problem, not a vibe. we walk through it in how to read a uk dog supplement label.

where cold-pressing fits, and where it doesn't

think of cold-pressing as a way of protecting what you've formulated, not as a benefit in itself. a low-temperature chew can support normal joint function, support normal digestion or help maintain a healthy skin and coat only if the right ingredients are present at sensible doses - the process just helps them survive to the bowl. you can see the doses and the testing behind ours on our proof page.

it's also worth keeping the category straight. a daily chew like this is a complementary pet food - under uk and eu feed rules that means it's designed to sit alongside a complete, balanced diet, not to replace it and not to act as a medicine. we're honest about what one chew can and can't do in all-in-one dog supplements uk, and there's more on the basics on our faq.

so: cold-pressed tells you how a chew was made, and that's genuinely useful information for anything fragile inside it. it doesn't tell you whether the recipe is any good. for that, read the doses - and keep an eye on your actual dog.