If I were to guess, it'd be about 1 to 1 and a half tablespoons. I honestly don't measure. The bottle advises 1tsp per 10 pounds, so he should get 8tsp, but I'm sure I give him less than that. It's like one full circle squirt around his bowl. Very technical, I know. I recently bought new measuring spoons and cups just for his stuff, so I probably should start using them!