Guest Stars Kathleen Barr voices Isis Cathy Weseluck voices Katy Credit Only Kelly Sheridan voices Mammoth Mutt Brian Drummond voices Kevin's Dad Nicole Oliver voices Kevin's Mom Scott McNeil voices Ace the Bat Hound 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 Mark Oliver voices Mechanikat Terry Klassen voices Tusky Husky Nicole Bouma voices Snooky Wookums Dale Wilson voices Paw Pooch Russell Roberts voices Additional Voices Matt Hill voices Additional Voices Mark Hildreth voices Additional Voices Alvin Sanders voices Additional Voices Reece Thompson voices Additional Voices Lee Tockar voices Additional Voices Noel Callaghan voices Additional Voices Louis Chirillo voices Additional Voices French Tickner voices Additional Voices Pam Hyatt voices Additional Voices Dave Ward voices Additional Voices Ty Olsson voices Additional Voices Janyse Jaud voices Additional Voices Michael Daingerfield voices Additional Voices Colin Murdock voices Additional Voices Brian Dobson voices Additional Voices Danny McKinnon voices Additional Voices Uncredited Kelly Sheridan voices Princess