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