Every summer the same story walks through my door. Itchy, red paws. A dog licking and chewing after every walk. And an owner who says the same three words: “it’s the grass.”
For years I agreed. Grass pollen peaks from June to Sept here in the UK, so the timing fits. But grass alone never explained the part that nagged at me: why it comes back every summer, a little worse each year.
Then I started reading the science properly. Most dogs owners call a “grass allergy” are actually reacting to several summer triggers at once — grass pollen, weed pollen, mould spores, dust mites, even fleas. The vets’ name for it is atopic dermatitis.
And here’s what I had missed: the pollen doesn’t just float past. It lands on the coat, paws and belly, gets absorbed through the skin, and your dog licks more of it in when they groom. The trigger is outside. How hard your dog reacts is decided inside.