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 Kevin's Dad Alberto Ghisi voices Kevin Scott McNeil voices Ace the Bat Hound 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 Ellen Kennedy voices Brainy Barker Dale Wilson voices Paw Pooch Terry Klassen voices Tusky Husky 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 Lee Tockar voices Stretch-O-Mutt Paul Dobson voices Additional Voices Michael Donovan voices Additional Voices Don Brown voices Additional Voices Aidan Drummond voices Additional Voices Christopher Gaze voices Additional Voices Mark Acheson voices Additional Voices Bill Mondy voices Additional Voices Uncredited Danny McKinnon voices Squeaky David Avalon voices Ramone Max Charles voices Puff Jennifer Carpenter voices Nikki