Guest Stars Joseph May voices Additional Voices Kathleen Barr voices Isis Credit Only Nicole Oliver voices Kevin's Mom Peter Kelamis voices Tail Terrier Tabitha St. Germain voices Melanie Tabitha St. Germain voices Andrea Scott McNeil voices Ignatius Terry Klassen voices Tusky Husky Kelly Sheridan voices Mammoth Mutt Michael Dobson voices Bulldog Brian Drummond voices Kevin's Dad Brian Drummond voices Streaky Trevor Devall voices Hot Dog Phil Hayes voices Additional Voices Alberto Ghisi voices Kevin 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 Shannon Chan-Kent voices Additional Voices Kirby Morrow voices Additional Voices Jay Brazeau voices Additional Voices Paul Dobson voices Additional Voices Gabe Khouth voices Additional Voices Lee Tockar voices Stretch-O-Mutt 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 Ellen Kennedy voices Jimmy the Rat