According to law enforcement, Young Song -- who also worked on films like "Kung Fu Panda," "Shark Tale," and "Madagascar 2" -- allegedly entered his neighbor's backyard last week ... and shot their 16-month-old German shepherd with a pellet gun, before beating it to death with a hammer.
According to the puppy's owner the act was caught on surveillance video.
Song pled "not guilty" today to one felony count of cruelty to an animal, and one count of misdemeanor petty theft of a dog ... after he allegedly dragged the mutilated corpse from his neighbor's yard.
Song was arrested yesterday and bail was set at $40,000. He is still in custody. His next court date is May 26. Song's lawyer Nicholas Okorocha had no comment.