This isn’t quite Andy Serkis-level motion capture brilliance ala Planet of the Apes , but you often forget that Buck is a CGI creation throughout thanks to the trick-of-the-mind the film manages.
The final triumph of dog-kind in the film recalls, of all things, Matt Reeves's superlative Planet of the Apes trilogy, postulating a future in which hyper-intelligent, non-human mammals inherit the earth.
Special mention must also be given to actor Terry Notary who was the motion capture reference for Buck, and much like he’s done in the past playing Kong in Kong: Skull Island and Rocket in all three of the recent Planet of the Apes adventures, he adds a layer of emotional authenticity that’s outstanding.
Accomplished motion-capture performer Terry Notary, known for his work on the most recent “Planet of the Apes” films and a thrilling and terrifying ape-inspired performance art piece in “The Square,” brings Buck’s movements to life, and it’s a truly skilled performance.
Terry Notary, the movement coach who taught actors how to mimic simians on the recent “Planet of the Apes” films, played the dog on the set before animation, in what the film bills as a “live action reference performance.”
In the recent Planet of the Apes reboot, the motion capture simians were an ethical alternative to real apes, who shouldn't be exploited for human entertainment.