This jaw-dropping video of a Ukrainian dog performing outstanding feats of agility is sure to leave you speechless. The dog, Tret, is seen scaling walls, climbing trees and jumping. He is simply remarkable. It's hard to believe that this athletic dog can complete these obstacles like they're no big deal. Many humans would find it challenging to do what Tret does. This dog seems to be a real-life Spider-Man (er, Spider-Dog). Paws up for Tret, who looks like he loves what he does and happens to be great at it too.