Today, rock pigeons are common in cities around the world. Originally, they were cliff-dwelling birds with a natural range from western and southern Europe through northern Africa to southwestern Asia. The earliest record of their domestication dates back to at least 5,000 years ago in the eastern Mediterranean, making rock pigeons the world's oldest domesticated bird.
Norway rat is the official common name for a rat that is native to the eastern Siberia/China border and parts of Japan. This misnomer occurred because the English naturalist who classified the rat in 1769 thought the rat was introduced to the UK on Norwegian ships. Although not true, the name stayed and continues to be used today.
Odorous house ants (OHA) belong to a subfamily of ants that use strong odors from anal glands as a chemical defense—there is no stinger. The OHA odor isn't unique to OHAs, but comes in handy when identifying them against similar-looking pest ants.