In Nintendogs what happens if you do not pick up your dog's poop?

In Nintendogs, if you neglect to pick up your dog's poop, it will accumulate in your virtual environment. This can lead to your dog becoming unhappy and less responsive to commands. Additionally, leaving poop on the ground can attract flies, further impacting your dog's mood and the cleanliness of your surroundings. Regularly cleaning up after your pet is important for maintaining a happy and healthy relationship with your virtual dog.