Sun, 14 Feb 2016 06:22:02 GMTBY JENNIFER PELTZ THE ASSOCIATED PRESSNEW YORK — An Australian shepherd named Holster scrambled, sprang and wriggled to take the Westminster Kennel Club agility title Saturday night. Seeming undaunted by anything, Holster wove at a whiz through a timed course of jumps, tunnels, ramps an...