Preheat oven to 350°F / 180°C, and line a baking sheet with parchment paper.
Check salmon carefully for bones - remove any bones or skin you find. Finely dice salmon, or place it in a small food processor and pulse to break it up.
In a medium mixing bowl, gently fold everything together until just combined. *The mixture should hold together when pressed—if it feels too wet, add a bit more oats; if it feels too dry, add a small splash of water.
Use a small cookie scoop to portion the meatballs - this keeps them uniform so they cook evenly, and they are easy to portion. Then gently roll into small, bite-sized meatballs (about 1 tablespoon each) in your hands to shape them.
Arrange the meatballs on the prepared baking sheet, spacing them slightly apart.
Bake for 12–15 minutes, or until set and lightly golden brown.
Cool completely before serving to your pup.