Collie puppies investigate an air compressor 💙 Good Dog breeder Hannah introduces her litters to new sights and sounds every day to help build their confidence and resilience. Today's challenge was an air compressor, which the puppies were eager to investigate but ultimately unfazed by. Follow along with Good Dog breeder Hannah's puppy-raising journey and find the right dog for you on the Good Dog app 💫 (🐶: @saltwatercollies) - @officialgooddog