What muscles do you work by doing spotty dogs?

"Spotty dogs" is not a recognized exercise term. It's likely a playful name for an exercise that you've encountered. To give you the most accurate answer, could you please describe the exercise?

For example, tell me:

* What is the movement like? (e.g., jumping, crawling, etc.)

* What position are your limbs in? (e.g., hands and knees, standing, etc.)

* What is the goal of the exercise? (e.g., strength, flexibility, balance, etc.)

Once I have a better understanding of the exercise, I can tell you which muscles are being worked.