* Scientifically: There's only one species of gray wolf, *Canis lupus*. However, within that species, there are several recognized subspecies. These subspecies are geographically isolated populations with distinct physical characteristics, behaviors, and genetic makeup.
* Popularly: Some people might consider certain subspecies to be different "kinds" of wolves due to their unique appearance or geographical location. For instance, the Eastern wolf (sometimes considered a distinct species, *Canis lycaon*) is a smaller, more reddish-brown wolf that lives in the eastern United States.
Here are some examples of recognized subspecies:
* Northern wolf (*Canis lupus lupus*) – Found in Canada, Alaska, Greenland, and Scandinavia
* Eastern wolf (*Canis lupus lycaon*) – Found in the northeastern United States
* Mexican wolf (*Canis lupus baileyi*) – Found in the southwestern United States and Mexico
* Alaskan wolf (*Canis lupus albus*) – Found in Alaska
* Himalayan wolf (*Canis lupus chanco*) – Found in the Himalayas
Ultimately, whether you consider these subspecies to be different "kinds" of gray wolves is a matter of perspective. Scientifically, they are all part of the same species. However, recognizing their differences is important for conservation efforts and understanding the diversity of wolves across their vast range.