Guest Stars Joseph May voices Additional Voices Credit Only Nicole Oliver voices Kevin's Mom Tabitha St. Germain voices Andrea Tabitha St. Germain voices Melanie Brian Drummond voices Streaky Brian Drummond voices Kevin's Dad Alberto Ghisi voices Kevin Scott McNeil voices Ignatius Peter Kelamis voices Tail Terrier Kelly Sheridan voices Mammoth Mutt Trevor Devall voices Hot Dog Michael Dobson voices Bulldog Phil Hayes voices Additional Voices 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 Jay Brazeau voices Additional Voices Kirby Morrow voices Additional Voices Shannon Chan-Kent voices Additional Voices Gabe Khouth voices Additional Voices Paul Dobson voices Additional Voices Christopher Gaze voices Additional Voices Michael Donovan voices Additional Voices Aidan Drummond 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