The Texas wolf (Canis lupus monstrabilis) is a subspecies of the gray wolf (Canis lupus) found mainly in Texas and New Mexico. Described in 1937 by the biologist Edward Alphonso Goldman, this canid died out five years later in 1942 and was posthumously merged by some authors with the Mexican wolf. Today, the Texas wolf is recognized as a distinct subspecies but its status is not unanimous.
The Mongolian mountain wolf (Canis Lupus Mongolonensis) was classified as a subspecies of the gray wolf (Canis lupus) by biologist Edward A. Goldman in 1937. Its name was given to it by the Mogollon Mountain Indians in Arizona and New Mexico.
The Hokkaido wolf (Canis lupus hattai), or Ezo wolf, is an extinct subspecies of the gray wolf native to Japan where the Honshu wolf (Canis lupus hodophilax) was also found. The Hokkaido wolf was classified as a subspecies of the gray wolf in 1931 by the Japanese Kyukichi Kishida.
The Manitoba wolf (Canis lupus griseoalbus) is one of the subspecies of the grey wolf (Canis lupus). It was described by zoologist Spencer Baird in 1858. Although the Manitoba wolf is officially classified as a subspecies, many specialists do not recognize it as such, considering it as a subspecies of the Hudson Bay wolf.
Gregor's red wolf (Canis lupus gregoryi), also known as Gregory's wolf, is a subspecies of the red wolf described in 1937 by Edward Alphonso Goldman. Its current taxonomy as a subspecies of grey wolf or red wolf is not yet clear, with some authors classifying Gregor's red wolf as either species.
The Bernard's wolf (Canis lupus bernardi) also known as Victoria Island wolf or Banks Island wolf is a subspecies of the grey wolf. This canid was identified in 1943 by zoologist John Anderson. The skin and skull of an adult male had been brought back by Pierre Bernard, hence the name "Bernardi" in Latin.
The Cascade Mountain wolf (Canis lupus fuscus) was a subspecies of the grey wolf (Canis lupus). This canid was described by Edward Alphonso Goldman in 1945. Nevertheless, the first description was made earlier by Sir John Richardson in 1839 and is the authoritative description of the current taxonomy. The Cascade wolf is also known as the brown wolf or Oregon wolf.
The Florida black wolf (Canis lupus floridanus) is one of the subspecies of the grey wolf (Canis lupus). This canid was officially declared extinct in 1921, although it has not been seen in the wild since 1908. Its status was long controversial, as it was once considered a subspecies of the red wolf (Canis rufus). The Florida black wolf is also known as the Florida wolf or black wolf.
The Newfoundland wolf (Canis lupus beothucus) is an extinct subspecies of the grey wolf (Canis lupus). This canid was officially declared extinct in 1930. The Newfoundland wolf was described in 1937 by zoologists Glover Morrill Allen and Thomas Barbour.
The Kenai Peninsula wolf (Canis lupus alces) is a subspecies of the grey wolf. This canid was the largest wolf in North America before it was exterminated by man. The Kenai Peninsula wolf was described by Edward Alphonso Goldman in 1941.
The Yukon wolf (Canis lupus pambasileus) also known as Interior Alaskan wolf is a subspecies of the grey wolf. This canid is one of the largest of the species Canis lupus in North America. Its Latin name was given to it in 1905 by the American zoologist Daniel Giraud Elliot. Some scientists believe that it is just a close relative of the Alaskan tundra wolf (Canis lupus tundrarum).