| Marina from B 900013 | 1991 | | 0 | 1 |
| Marineudo and Irinéia | 1995 | | 0 | 1 |
| Marion | 2012 | | 0 | 1 |
| Marius Mestkever | 1988 | | 0 | 1 |
| Marko Andric | 2026 | | 0 | 1 |
| Marko the bear | 1983 | | 0 | 1 |
| Marlene from B 830078 | 1983 | | 0 | 1 |
| Marlene from B 950153 | 1996 | | 0 | 1 |
| Marlene the secretary | 1982 | | 0 | 1 |
| Marli Marlene | 1984 | | 0 | 1 |
| Marli from B 900135 | 1991 | | 0 | 1 |
| Marlin /Topolino | 1989 | | 1 | 1 |
| Marlo Burke | 2008 | | 0 | 1 |
| Marmaduke | 1945 | | 0 | 1 |
| Marmy-Ladha | 1972 | | 0 | 1 |
| Marotti from Violetta | 2014 | | 0 | 1 |
| Marquinho Karamurchevski | 1993 | | 0 | 1 |
| Marquinho from B 900040 | 1992 | | 0 | 1 |
| Marquinho the hairdresser | 1983 | | 0 | 1 |
| Marquis de Louvois | 1954 | | 0 | 1 |
| Marquise de Boulainvilliers | 1969 | | 0 | 1 |
| Marrudo | 1984 | | 0 | 1 |
| Marsh Mouse from SC | 1967 | | 0 | 1 |
| Marta Cofre | 1987 | | 0 | 1 |
| Marta Million | 2018 | | 0 | 1 |
| Marta from B 870164 | 1988 | | 0 | 1 |
| Marta the pigeon | 1994 | | 0 | 1 |
| Martha Raye | 1939 | | 0 | 1 |
| Martin | 2007 | | 0 | 1 |
| Martin Alcaraz | 2017 | | 0 | 1 |
| Martin Bearings | 2018 | | 0 | 1 |
| Martin Keating | 2006 | | 0 | 1 |
| Martin Muskrat | 1931 | | 0 | 1 |
| Martin Sullivan | 2022 | | 0 | 1 |
| Martina Greco | 2023 | | 0 | 1 |
| Martinha from B 820122 | 1984 | | 0 | 1 |
| Martje Mestkever | 2016 | | 0 | 1 |
| Maruzza | 2025 | | 0 | 1 |
| Maruzza Sinatra | 2025 | | 0 | 1 |
| Marvin Suggs | 2010 | | 0 | 1 |
| Mary Ann | 2012 | | 0 | 1 |
| Mary Ann's father | 2012 | | 0 | 1 |
| Mary Chipmunk | 1961 | | 0 | 1 |
| Mary Contrary | 1961 | | 0 | 1 |
| Mary Dressler | 2018 | | 0 | 1 |
| Mary Greene | 2006 | | 0 | 1 |
| Mary Jo's dog | 1981 | | 0 | 1 |
| Mary May Quackmore | 2008 | | 0 | 1 |
| Mary Pickford | 1982 | | 0 | 1 |
| Mary and John | 2008 | | 0 | 1 |
| Marylenne from B 960035 | 1996 | | 0 | 1 |
| Marziani | 2005 | | 0 | 1 |
| Marçal Tante | 1992 | | 0 | 1 |
| Massacre Jr. | 1989 | | 0 | 1 |
| Massawomeck tribe | 1995 | | 0 | 1 |
| Master Crook | 1967 | | 0 | 1 |
| Master Org | 2002 | | 0 | 1 |
| Mat Mastif | 1977 | | 0 | 1 |
| Matador from QMS 1938-016 | 1982 | | 0 | 1 |
| Matador the parrot | 1961 | | 0 | 1 |