Name -- Arabian Wolf
Classification -- Canis lupus Arabs
Status -- Critically endangered, declining
description -- A very small species, typically blended brown or completely brown with a thin coat. The Arabian wolf is a desert adapted wolf. Their ears are proportionately larger in relation to body size when compared to other species, an adaptation needed to disperse body heat. This species is unusual, as it is not known to howl.
Historic Range -- Israel, Saudi Arabia, Yemen, Oman

Name -- Arctic Wolf
Classification -- Canis lupus arctos
Status -- Stable
Description -- Arctic Wolves generally are smaller, being about 3 to 6 feet long including the tail. Their shoulder heights vary from 25 to 31 inches; Arctic Wolves are bulkier wolves, often weighing over 100 pounds. Weights of up to 175 pounds have been observed in full-grown males. Arctic Wolves usually have small ears, which help the wolf maintain body heat. Their pelts are almost exclusively white or creamy white with a thick coat.
Historic Range -- Canadian Arctic, Greenland

Name -- Caspian Sea Wolf
Classification -- Canis lupus cubanensis
Status -- Endangered, declining
Description -- A smaller species. The Caspian Sea Wolf is a critically endangered species, and was once found throughout the area between the Caspian and Black seas. Now an extremely rare animal, it exists only in a remote area in the extreme southeastern portion of Russia that borders the Caspian Sea.
Historic Range -- Between the Caspian and Black seas

Name -- Eastern Timber Wolf
Classification -- Canis lycaon
Status -- At risk
Description -- A larger species. Sometimes it is also viewed as a result of historical hybridization between grey wolves and red wolves or coyotes. However, recent molecular studies suggest that the eastern wolf is not a gray wolf subspecies, nor the result of gray wolf/coyote hybridization, but a distinct species.
Historic Range -- Southeastern Canada, Eastern United States

Name -- Egyptian Wolf
Classification -- Canis lupus lupaster
Status -- Critically endangered, proposed extinct
Description -- A small species. Usually a tinged gray - beige or dirty yellow. Lanky. Very rarely encountered in locals area. Weight 10-15 kg. Earlier consider for base similar to Arabian wolf and thought that related to them. There are currently no protection laws regarding this animal in Egypt, and the last estimate was that there remain only 30-50 Egyptian Wolves still in existence.
Historic Range -- Far Northern Africa

Name -- Eurasian Wolf
Classification -- Canis lupus lupus
Status -- Stable
Description -- An average to large-sized species. Typically have shorter, denser fur. Their size varies according to region, though as a whole, adults stand at 30 inches at the shoulder and weigh around 70-130 pounds, with females usually being about twenty per cent smaller than males. The heaviest known Eurasian wolf was killed in Romania and weighed 158 pounds. Colour ranges from white, cream, red, grey and black, sometimes with all colors combined.
Historic Range -- Western Europe, Scandinavia, Russia, China, Mongolia, Himalaya Mountains

Name -- Great Plains Wolf
Classification -- Canis lupus nubilus
Status -- Stable
Description -- Also known as the Buffalo Wolf. An average-sized species. A typical Great Plains Wolf is 4 1/2 - 6 1/2 feet long from snout to tail tip, and weighs between 60 and 110 pounds. It usually features a coat blended with gray, black, buff, or red.
Historic Range -- Southern Rocky Mountains, Midwestern United States, Eastern and Northeastern Canada, far Southwestern Canada, and Southeastern Alaska

Name -- Iberian Wolf
Classification -- Canis lupus signatus
Status -- Stable
Description -- An average-sized species. The Iberian wolf differs from the more common Eurasian Wolf with its thinner build, the white marks on the upper lips, the dark marks on the tail and a pair of dark marks in its front legs that give it its subspecies name, signatus ("marked").
Historic Range -- North Portugal, North-Western Spain

Name -- Italian Wolf
Classification -- Canis lupus italicus
Status -- Endangered
Description -- This is a medium sized species. Males have an average weight of 53-88 pounds, with females usually being 10% lighter. Body length is usually 39-55 inches. Fur colour is commonly blended grey or brown, though black specimens have recently been sighted in the Mugello region and the Tuscan-Emilian Apennines.
Historic Range -- Italy, Switzerland, France

Name -- Mackenzie Valley Wolf
Classification -- Canis lupus occidentalis
Status -- Stable
Description -- A very large species. Mackenzie Valley Wolves typically stand about 32-36 inches at the shoulder and males weigh between 100 and 145 pounds. The weight record is held by a wild specimen caught in Alaska which weighed 175 pounds. Its thick, long limbs are built for traveling through rough terrain such as deep snow or the cliffy edges of the Rocky Mountains. Its deep chest hosts large lungs, letting the wolf breathe more efficiently at higher altitudes, and allowing it to exert huge amounts of stamina traveling up to 70 miles in one day.
Historic Range -- Alaska, Northern Rockies, Western and Central Canada

Name -- Mexican Wolf
Classification -- Canis lupus baileyi
Status -- Critically endangered
Description -- A smaller species. Usually tawny brown or rusty in color. The Mexican Gray Wolf is the smallest species present in North America, reaching an overall length no greater than 53 inches and a maximum height of about 31 in. Weight ranges from 60–100 pounds.
Historic Range -- Central Mexico, Western Texas, Southern New Mexico and Arizona

Name -- Russian Wolf
Classification -- Canis lupus communis
Status -- Stable, declining
Description -- A very large species. The Russian wolf is large by grey wolf standards, with an average weight of 55 kg and a range of 30-80 kg for males and an average of 45 kg and a range of 23-55 kg for females.
Historic Range -- Central Russia

Name -- Tundra Wolf
Classification -- Canis lupus albus
Status -- Stable
Description -- Tundra wolves are among the largest of the species. They can attain a body length of 7 feet and usually an average weight of 100-125 pounds, though there are some unconfirmed reports of animals reaching weights of 220 pounds. Most tundra wolves have a grey color, with mixes of black, rust and silver gray.
Historic Range -- Northern Russia, Siberia

Name -- Dire Wolf
Classification -- Canis dirus
Status -- Extinct
Description -- The Dire Wolf was slightly larger than the Gray Wolf. It averaged about 5 feet in length and weighed about 110 pounds. Though large specimens may have weighed as much as 175 pounds. The legs of the Dire Wolf were proportionally shorter and sturdier than those of the Gray Wolf, which suggests that the Dire Wolf was a poorer runner, and may have scavenged for food or hunted large, slower-moving prey.
Historic Range -- Unknown

Name -- Ethiopian Wolf
Classification -- Canis lycaon
Status -- New Breed
Description -- The Ethiopian wolf is a small, reddish, fox-like wolf. It is one of the rarest and most endangered of all canids. It is also known as the Abyssinian wolf, red jackal, red fox, Simien fox (or jackal).
Historic Range -- sub-Saharan Africa

Name -- Himalayan Wolf
Classification -- Canis himalayaensis
Status -- New Breed, critically endangered
Description -- The Himalayan Wolf, originally thought to belong to Tibetan wolf, may represent a distinct canid species. It is native to a small region in northern India and eastern Nepal in the Himalayas. DNA research suggested that this wolf may represent an ancient isolated line of wolves in India.
Historic Range -- India

Name -- Maned Wolf
Classification -- Chrysocyon brachyurus
Status -- Near treatened
Description -- The Maned Wolf has often been described as "a Red Fox on stilts" due to its similar coloration and overall appearance, though it is much larger than a Red Fox and belongs to a different genus. The adult animal stands almost 3 ft tall at the shoulder, and weighs 50 to 55 lbs. The long legs are probably an adaptation to the tall grasslands of its native habitat. The Maned Wolf's fur is reddish brown to golden orange on the sides, with long, black legs and a distinctive black mane. The coat is further marked with a whitish tuft at the tip of the tail and a white "bib" beneath the throat. The mane is erectile, and is typically used to enlarge the wolf's profile when threatened or when displaying aggression.
Historic Range -- Brazil, Paraguay, and Bolivia east of the Andes

Name -- Red Wolf
Classification -- Canis rufus
Status -- critically endangered
Description -- The Red Wolf is the rarest wolf species and is one of the most endangered animals in the world. The Red Wolf typically has a height at the shoulders of 15–16 inches, a length of 4.5–5.5 feet, and weigh 40–80 pounds. They have a reddish coat, silver-grey forehead and darker signs on white legs and a cream underbelly. The red wolf has long ears and smooth coat with long legs.
Historic Range -- Southeastern United States