Guest Stars Kathleen Barr voices Isis Credit Only Nicole Oliver voices Kevin's Mom Tabitha St. Germain voices Andrea Tabitha St. Germain voices Melanie Brian Drummond voices Streaky Alberto Ghisi voices Kevin Scott McNeil voices Ignatius Terry Klassen voices Tusky Husky Peter Kelamis voices Tail Terrier Kelly Sheridan voices Mammoth Mutt Michael Dobson voices Bulldog Trevor Devall voices Hot Dog Phil Hayes voices Additional Voices Mark Oliver voices Mechanikat Ellen Kennedy voices Brainy Barker Dale Wilson voices Paw Pooch Nicole Bouma voices Snooky Wookums 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 Dave Ward voices Additional Voices French Tickner voices Additional Voices Louis Chirillo voices Additional Voices Noel Callaghan voices Additional Voices Pam Hyatt voices Additional Voices Ty Olsson voices Additional Voices Janyse Jaud voices Additional Voices Michael Daingerfield voices Additional Voices Cathy Weseluck voices Additional Voices Colin Murdock voices Additional Voices Brian Dobson voices Additional Voices Danny McKinnon voices Additional Voices Uncredited Ellen Kennedy voices Jimmy the Rat Scott McNeil voices Sailor