Guest Stars Kathleen Barr voices Isis Credit Only Tabitha St. Germain voices Andrea Tabitha St. Germain voices Melanie Scott McNeil voices Ignatius Nicole Oliver voices Kevin's Mom Peter Kelamis voices Tail Terrier Kelly Sheridan voices Mammoth Mutt Trevor Devall voices Hot Dog Michael Dobson voices Bulldog Brian Drummond voices Kevin's Dad Phil Hayes voices Additional Voices Alberto Ghisi voices Kevin Terry Klassen voices Tusky Husky 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 Alvin Sanders voices Additional Voices Mark Hildreth voices Additional Voices Reece Thompson voices Additional Voices Lee Tockar voices Additional Voices Louis Chirillo voices Additional Voices Noel Callaghan voices Additional Voices French Tickner voices Additional Voices Dave Ward voices Additional Voices Pam Hyatt voices Additional Voices Ty Olsson voices Additional Voices Cathy Weseluck voices Additional Voices Michael Daingerfield voices Additional Voices Colin Murdock voices Additional Voices Janyse Jaud voices Additional Voices Brian Dobson voices Additional Voices Danny McKinnon voices Additional Voices Uncredited Peter Kelamis voices Lou Peter Kelamis voices Bud