This is a pack comprised of animals that start with the letter "O" in the English language. I doubt that this will ever become a real pack due to the game being available in a variety of languages, and therefore some people won't get it. I just thought that it might be fun though.
- Virginia Opossum
- Ocelot
- Sea Otter OR North American River Otter
- Arabian Oryx
- Onager
- Musk Ox
- Olinguito
- Exhibit - Pacific Octopus