My dogs like to graze on blades of weed grass in the yard or on walks, so I thought I would grow them their own pots of sprouts, the way people do for cats. But what? Pet shots don't sell "dog grass" seeds so I've tried buying two kinds of cat grass -- one was oats and one was a mix of wheat and oats. They grew into tempting-looking spears, but my dogs expressed no interest. Does anyone know what kind of sprouts are healthy for dogs and easy to grow?