Guest Stars Joseph May voices Additional Voices Credit Only Nicole Oliver voices Kevin's Mom Peter Kelamis voices Tail Terrier Scott McNeil voices Ignatius Tabitha St. Germain voices Melanie Tabitha St. Germain voices Andrea 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 Brian Drummond voices Streaky Nicole Bouma voices Snooky Wookums Dale Wilson voices Paw Pooch Ellen Kennedy voices Brainy Barker Terry Klassen voices Tusky Husky Mark Oliver voices Mechanikat Russell Roberts voices Additional Voices Matt Hill 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 Gabe Khouth voices Additional Voices Aidan Drummond voices Additional Voices Christopher Gaze voices Additional Voices Michael Donovan voices Additional Voices Don Brown voices Additional Voices Mark Acheson voices Additional Voices Bill Mondy voices Additional Voices Uncredited Scott McNeil voices Mertin the Magnificent