Waffles is or was Pastor Jeff's dog. It is not known whether Waffles was a childhood pet or a pet he has during the events of Young Sheldon. He is mentioned when Pastor Jeff is telling Mary and Peg how much he loves his new baby. "I used to think I loved my dog Waffles, but it doesn't even compare." - Jeff Difford in "The Wild and Woolly World of Nonlinear Dynamics", Season 4 (Young Sheldon). It is the only time Waffles in mentioned throughout Young Sheldon. Selena (Pastor Jeff's ex-wife) could have been a possible owner of Waffles if he was not a childhood pet of Pastor Jeff. Robin Difford (Pastor Jeff's current wife) could also be a potential owner of Waffles.