Mexican Gray Wolf
Length- 140-170 centimeters
Height- 72-80 centimeters shoulder height
Weight- 45-176 pounds
Lifespan- 8-16 years
Litter Size- 4 pups
Colors- Blends of blacks, white, brown, and grey. However, completly black and white Mexican gray's are very very rare.

Gray Wolf
Length- 4 1/2 feet
Height- 26-32 inches
Weight- 55-115 pounds
Lifespan- 8-12 years
Litter Size- 4-7 pups
Colors- Grizzled gray, black and all-white.

Red Wolf
Length- 4 feet
Height- 26 inches max
Weight- 40-80 pounds
Lifespan- 6-7 years
Litter Size- 2-8 pups
Colors- Black, brown, gray, yellow, and red.

Arctic Wolf
Length- 3-5 feet
Height- 25-31 inches
Weight- 175 max
Lifespan- 10 years max
Litter Size- 5-9 pups
Colors- Red, gray, white, and black.

American Timber Wolf
Length- 51-78 inches
Height- 24-35 inches
Weight- 55-143 pounds
Lifespan- 10 years max
Litter Size- 4-6 pups
Colors- Gray, gray-brown, white, red, brown, and black.

Northern Rocky Mountain Wolf
Length- ?
Height- 30 inches
Weight- 85-115 pounds
Lifespan- 13 years max
Litter Size- About 5 pups
Colors- Black, white, gray, tan, and blue-ish.