So, what doesn’t Amazon sell? You can buy literally everything you think of on Amazon. Now, you don’t have to go to the store to pick up dog food. In promotion of their new dog food brand, Wag, and the movie Secret Life of Pets 2, Amazon is offering 40% off your first order of a trial-size of Wag Dry Food. You can choose from turkey and lentil, beef and lentil with wild boar, salmon and lentil, lamb and lentil, or a multipack.