~ M ~
| Mabel | Mabry | Mac | Macaroni | Macbeth | Mace | MacGregor |
| Mackenzie | Mackie | MacPherson | Mad Hatter | Madam | Madge | Madison |
| Madrid | Magdalena | Maggie | Magic | Magnum | Mahala | Maharani |
| Mahatma | Mai Ling | Malarkey | Malcolm | Malone | Mama Cass | Mamie |
| Manaka | Mandolin | Mandrake | Marbles | Marcello | Marco Polo | Marcy |
| Mardi Gras | Margo | Maribel | Mariel | Marigold | Marilee | Marissa |
| Marlee | Marley | Marlow | Marmaduke | Marmalade | Marnie | Marshall |
| Marshmallow | Marty | Marx | Masher | Mason | Massey | Matilda |
| Matt | Matthew | Mattie | Maude | Maverick | Mavis | Max |
| Maxine | Maxwell | Maybe | Maynard | Mayv | Maze | McDuff |
| McKay | McMillan | Mead | Meenie | Meesha | Megan | Meggy |
| Melanie | Melba | Melissa | Melly | Melody | Mendel | Menol |
| Menu | Mercedes | Mercy | Mergatroid | Merlin | Merrielle | Merrill |
| Merry Weather | Meryl | Messie | Me-too | Mia | Micah | Mickey |
| Midas | Midget | Midnight | Midnight Ride | Mighty Mouse | Mignon | Miguel |
| Mike | Milan | Mildred | Miles | Millicent | Milly | Milo |
| Mimi | Mindy | Ming | Minka | Minny | Minou | Mint |
| Minx | Mira | Mirage | Miranda | Mischa | Missy | Misty |
| Mitch | Mitri | Mitsy | Mittens | Mitzy | Miyoshi | Moby |
| Moby Dick | Mocha | Mohammed | Mokey | Molasses | Molly | Molson |
| Mommy | Mona | Monday | Monica | Monique | Monkey | Monroe |
| Monsignor | Montel | Montezuma | Montgomery | Monty | Mooch | Moon |
| Moonshine | Moose | Moppet | Mopsy | Mordrana | Morgan | Morgana |
| Morie | Mork | Morris | Morticia | Mortimer | Moscow | Moses |
| Moss | Motley | Mouser | Mousie | Moussa | Mouth | Moxie |
| Mozart | Mr. Ling | Mr. Magoo | Muffin | Muffy | Muggins | Mugs |
| Mugsy | Munchie | Munchkin | Muppie | Murdock | Muriel | Murphy |
| Murray | Mushnik | Musket | Muskrat | Muss | Mutley | Mutt |
| My Man Godfrey | Myron | Myrtle |
If you use any of the above names, please email me, and let me know which name that you chose and what type of pet you've named!
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