(written from a Production point of view)
Buck is one of the two wolves who appeared as the wolf in the Star Trek: The Next Generation seventh season episode "Dark Page" in 1993. The other wolf was Teddy. They were trained by Rob Bloch, Chris Edrington and Bobbi Edrington of Critters of the Cinema.
Buck and Teddy previously appeared as the wolf "Two Socks" in the 1990 Academy Award winning drama Dances with Wolves.