It begins Saturday morning at the Javits Center convention hall with agility and obedience championships and some demonstration events, including Westminster’s first experiment with flyball. That’s essentially a canine relay race that involves running a course of jumps and retrieving a ball.

Five-year-old Monty, winner of the Working Group three straight years, was named Best in Show at the 149th Westminster Kennel Club Dog Show at Madison Square Garden in New York on Tuesday.