Applied and Social Sciences magazines
- Mink, European
- Mole, Giant Golden
- Monitor, Komodo Island
- Monkey, Central American Squirrel
- Monkey, Woolly Spider
- Moth, Blackburn's Sphinx
- Murrelet, Marbled
- Mussel, Dwarf Wedge
- Mussel, Fat Pocketbook Pearly
- Mussel, Ring Pink
- Nonhazardous Materials Recovery—Recycling and Composting
- Nonhazardous Waste
- Orchid, Eastern Prairie Fringed
- Oryx, Scimitar-horned
- Otter, Marine
- Owl, Cactus Ferruginous Pygmy
- Owl, Northern Spotted
- Palm, Argun
- Palm, Carossier
- Panda, Giant