Formal:
* Wolf: This is the most straightforward and common term.
* Canis lupus: This is the scientific name for the gray wolf.
Informal:
* Wolfie: This is a cute and playful nickname.
* Big bad wolf: This is a familiar term from fairy tales.
* Lobo: This is the Spanish word for wolf.
* Wolver: This is an archaic term for wolf.
Descriptive:
* Gray wolf: This refers to the most common type of wolf.
* Timber wolf: This is a synonym for gray wolf, often used in North America.
* Arctic wolf: This is a subspecies of wolf that lives in the Arctic.
* Dire wolf: This is an extinct species of wolf that lived in North America during the Pleistocene epoch.
Figurative:
* Beast: This is a general term for any wild animal, including wolves.
* Predator: This highlights the wolf's hunting instincts.
* Guardian: This emphasizes the wolf's protective nature.
Ultimately, the best way to call a wolf depends on the context and your personal preference.