Guest Stars Joseph May voices Additional Voices Credit Only Tabitha St. Germain voices Melanie Tabitha St. Germain voices Andrea Nicole Oliver voices Kevin's Mom Peter Kelamis voices Tail Terrier Scott McNeil voices Ace the Bat Hound Terry Klassen voices Tusky Husky Kelly Sheridan voices Mammoth Mutt Brian Drummond voices Kevin's Dad Brian Drummond voices Streaky Alberto Ghisi voices Kevin Michael Dobson voices Bulldog Trevor Devall voices Hot Dog Phil Hayes voices Additional Voices Dale Wilson voices Paw Pooch Ellen Kennedy voices Brainy Barker Nicole Bouma voices Snooky Wookums 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 Lee Tockar voices Stretch-O-Mutt Christopher Gaze voices Additional Voices Don Brown voices Additional Voices Michael Donovan voices Additional Voices Mark Acheson voices Additional Voices Bill Mondy voices Additional Voices Uncredited Sam Vincent voices Scientist