Guest Stars Kathleen Barr voices Isis Credit Only Scott McNeil voices Ignatius Nicole Oliver voices Kevin's Mom Tabitha St. Germain voices Andrea Tabitha St. Germain voices Melanie Kelly Sheridan voices Mammoth Mutt Peter Kelamis voices Tail Terrier Michael Dobson voices Bulldog Phil Hayes voices Additional Voices Alberto Ghisi voices Kevin Brian Drummond voices Kevin's Dad Trevor Devall voices Hot Dog Terry Klassen voices Tusky Husky Dale Wilson voices Paw Pooch Nicole Bouma voices Snooky Wookums Mark Oliver voices Mechanikat Ellen Kennedy voices Brainy Barker Russell Roberts voices Additional Voices Matt Hill voices Additional Voices Mark Hildreth voices Additional Voices Alvin Sanders voices Additional Voices French Tickner voices Additional Voices Reece Thompson voices Additional Voices Pam Hyatt voices Additional Voices Lee Tockar voices Additional Voices Louis Chirillo voices Additional Voices Dave Ward voices Additional Voices Noel Callaghan voices Additional Voices Ty Olsson voices Additional Voices Cathy Weseluck voices Additional Voices Colin Murdock voices Additional Voices Michael Daingerfield 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