Tara Hui climbed under her deck, nudged past a cluster of 55-gallon barrels and a roosting chicken, and pointed to a shiny metal gutter spout.

Big Brown failed in his bid to become horse racing’s 12th Triple Crown winner when he finished dead last to Da’ Tara in the Belmont Stakes.Da’ Tara went wire to wire to beat eight other thoroughbreds over 1 1/2 miles, the longest and toughest of the...