First session with deaf puppy Dotie with a vibrating collar, which we use initially to get the puppy to make eye contact with us, and later as a cue for her to come find us. The sequence Walt refers to is, “Toggle (press the button on the collar), Thumbs Up (our signal for “Yes”), Treat.” Sister Sassie got the same lesson today. Both Heeler puppies are working on leash and with bells on their collars for safety.