| Name | Meaning | Gender | Origin |
|---|
| Midnight | Intense darkness, the middle of the night | Unisex | English |
| Miko | Crimson truth | Male | Japanese |
| Milo | Uncertain, perhaps peaceful | Male | Germanic |
| Mischief | One that causes minor trouble or disturbances | Unisex | English |
| Monty | Gomeric's hill | Male | French |
| Moose | Largest member of the deer family. Moose have heavy brown bodies with humped shoulders and broad antlers. | Unisex | English |
| Muffin | A small cup shaped cake | Unisex | English |
| Muffy | | Unisex | Hebrew |
| Murphy | Sea warrior | Male | Gaelic |
| Nicky | Victory of the people | Unisex | Greek |
| Nipper | A small boy | Unisex | English |
| Noah | Rest | Male | Hebrew |
| Oliver | Elf army | Male | French |
| Oscar | Divine spear | Male | English |
| Oz | Divine | Male | English |
| Peanut | Edible nuts eaten raw or roasted. | Unisex | English |
| Prince | Royal son | Male | English |
| Puss | | Unisex | Hebrew |
| Ralph | Wolf council | Male | Germanic |
| Rambo | | Unisex | Hebrew |
| Rascal | One that is playfully mischievous | Unisex | English |
| Rebel | One that resists of defies authority | Unisex | English |
| Rex | King | Male | Latin |
| Riley | Rye clearing | Male | English |
| Rocky | Battle cry | Male | Germanic |
| Rogue | | Unisex | Hebrew |
| Romeo | Pilgrim to Rome | Male | Italian |
| Roo | | Unisex | Hebrew |
| Roxie | Star | Unisex | Persian |
| Rudy | Famous wolf | Male | Germanic |