Storm Wolf
The Storm Wolf is an EXCLUSIVE pet that could have been bought from the Exclusive Shop for 5,500 Robux. It was introduced in the Haunted Update.
The latest Pet Simulator X value list for Storm Wolf can be found below:

Regular
💎 163,000,000,000 (163b)

Golden
💎 Not Available

Rainbow
💎 Not Available

Dark Matter
💎 Not Available