| Your Precious Pet's Names |
| Mab | Mac | Macaroni | ||||
| Macduff | Maceo | MacGregor | Macho | Macintosh | Mack | MacKinley |
| Madam | Madame | Madamoiselle | Maddie | Maddox | Madeira | Madeleine |
| Madison | Madonna | Madrid | Maestro | Maeve | Magellan | Magenta |
| Magic | Magneto | Magnificent | Magnolia | Magnum | Magnus | Magoo |
| Magritte | Mahogany | Mai Tai | Maisie | Major | Mako | Malachi |
| Malibu | Maliika | Malinda | Mallory | Malo | Malvin | Mama |
| Mambo | Mana | Mancha | Mancini | Mandalay | Mandarin | Mandrake |
| Mango | Manny | Mansell | Maple | Marbles | Marcia | Marcus |
| Marelda | Marengo | Margaret | Margarita | Margaux | Marguerite | Maria |
| Marilyn | Mario | Marjoram | Mark | Marlene | Marley | Marlon |
| Marmalade | Marmion | Marnie | Marrakesh | Mars | Marshall | Marshmallow |
| Martin | Martini | Marty | Marvin | Mary | Marzipan | Masaccio |
| Matareka | Matey | Matilda | Matisse | Matthew | Matty | Maude |
| Maurice | Maverick | Max | Maxi | Maxine | May | Maya |
| Maynard | Mayor | Mayra | Mazda | Meara | Measles | Meeko |
| Megan | Megs | Meiko | Mel | Melanie | Melantha | Melba |
| Melissa | Melody | Melvin | Memphis | Mercedes | Meredith | Merlin |
| Meryl | Mestral | Metro | Mia | Micestro | Michael | Michelle |
| Mickey | Middy | Midge | Midget | Midnight | Miffy | Mighty |
| Migraine | Migrane | Mijbil | Mikado | Miki | Mikito | Milan |
| Milkshake | Millennium | Miller | Millie | Milo | Milou | Milton |
| Mindy | Minerva | Ming | Mini | Minky | Minnie | Mintie |
| Minx | Mira | Mirabel | Miranda | Mischa | Mischief | Mischievous |
| Miss Kitty | Missy | Mister | Misty | Mitchell | Mite | Mittens |
| Mo | Moby | Moby Dick | Mocha | Moet | Moggy | Mohawk |
| Mojo | Molar | Molasses | Moliere | Molly | Molson | Monet |
| Moni | Monica | Monkey | Monroe | Monsieur | Monster | Montag |
| Montezuma | Montgomery | Monty | Moo | Moonshine | Moony | Moose |
| Moppet | Mopsy | Mora | Morag | Morgan | Morgana | Mork |
| Morris | Morrison | Morticia | Mortimer | Mosag | Moscow | Moses |
| Mouser | Moustache | Mowgli | Moxie | Mozart | Mufasa | Muffin |
| Muggle | Mugsy | Mulan | Mulder | Mullion | Mumcat | Munchkin |
| Muppet | Muriel | Murphy | Murray | Muscles | Mushka | Mushroom |
| Mustard | Mutley | Muttly | Mutz | Mutzi | Muzby | Myrna |