Here are some general size ranges:
* Average weight: 40-175 pounds (18-80 kg)
* Average length: 4-6 feet (1.2-1.8 meters)
* Average shoulder height: 2-3 feet (0.6-0.9 meters)
The largest gray wolf ever recorded was a male from Alaska, weighing in at 170 pounds (77 kg). This was a rare exception, however.
It's important to remember that these are just averages. Gray wolves living in areas with abundant prey and ideal living conditions tend to be larger than those in areas with scarcer resources.
Subspecies variations:
* North American gray wolves (Canis lupus lupus) are generally larger than their Eurasian counterparts.
* The Alaskan wolf (Canis lupus albus) is the largest subspecies, with males typically exceeding 100 pounds (45 kg).
* The Eastern wolf (Canis lupus lycaon) is a smaller subspecies, with males typically weighing 50-75 pounds (23-34 kg).
Ultimately, the size of a gray wolf is influenced by genetics, diet, and its environment.