Guest Stars Joseph May voices Additional Voices Matt Hill voices Griff Credit Only Nicole Oliver voices Kevin's Mom Peter Kelamis voices Tail Terrier Scott McNeil voices Ignatius Tabitha St. Germain voices Andrea Tabitha St. Germain voices Melanie Kelly Sheridan voices Mammoth Mutt Alberto Ghisi voices Kevin Phil Hayes voices Additional Voices Trevor Devall voices Hot Dog Michael Dobson voices Bulldog Brian Drummond voices Kevin's Dad Ellen Kennedy voices Brainy Barker Terry Klassen voices Tusky Husky Dale Wilson voices Paw Pooch Mark Oliver voices Mechanikat Nicole Bouma voices Snooky Wookums Russell Roberts voices Additional Voices Kathleen Barr voices Additional Voices Shannon Chan-Kent voices Additional Voices Paul Dobson voices Additional Voices Kirby Morrow voices Additional Voices Jay Brazeau voices Additional Voices Lee Tockar voices Stretch-O-Mutt Gabe Khouth voices Additional Voices Aidan Drummond voices Additional Voices Don Brown voices Additional Voices Michael Donovan voices Additional Voices Christopher Gaze voices Additional Voices Mark Acheson voices Additional Voices Bill Mondy voices Additional Voices Uncredited Danny McKinnon voices Squeaky Max Charles voices Puff David Avalon voices Ramone Dale Wilson voices Artie Terry Klassen voices Waddles