Made in the UK

For dogs who
deserve to age well.

Daily functional treats for senior dogs, baked with a volcanic microalgae naturally rich in antioxidants.

Shop now£34 · 30-day supply
A senior golden retriever resting peacefully in warm afternoon light
01

Naturally rich in antioxidants

Sourced from a resilient volcanic microalgae, not synthetic additives.

02

Made for the senior years

Formulated with the nutritional needs of ageing dogs in mind.

03

Clean label

No artificial colours. The natural blue comes from the algae itself.

A calm older dog walking in a sunlit meadow
Our ingredient

Born in volcanic waters.

At the heart of Greymuzzles is a remarkable microalgae that thrives in mineral-rich volcanic waters — one of the planet's most demanding environments. To survive, it produces an unusually high concentration of natural antioxidants, alongside a vivid blue-green pigment called C-phycocyanin.

We work with food scientists and veterinary nutritionists to bake this ingredient into a small daily treat designed around the nutritional considerations of older dogs — with nothing artificial added, ever.

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A quiet daily ritual,
for the years that matter most.

Shop now — £34