Dog Dictionary
- Macroblepharon
- Mad Dog
- Mahogany
- Major
- Making a Wheel
- Mane
- Mantle
- Manubrium
- Marcel Effect
- Markings
- Mask
- Mastitis
- Mate
- Maternal Immunity
- Measure Out
- Medial
- Median Line
- Megaesophagus
- Merle
- Metatarsus
- Microchip
- Milk Teeth
- Miscellaneous Class
- Mismark
- Mites
- Modified-Live Virus
- Molars
- Molera
- Mongrel
- Monorchid
- Mottled
- Move
- Moving Close
- Moving Straight
- Music
- Mustard
- Mute
- Muzzle
- Muzzle Band
- Myiasis