When Jaci Spooner told her daughter her miniature pet pony, Trigger, had run away and they needed to go pick him up Tuesday afternoon, the 6-year-old girl didn’t believe her.“She thought I was pulling her leg,” Spooner recalled.When they pulled up at a local farm and saw Trigger, her daughter, Andalucia Yandell, excitedly wrapped her arms around the pony that just the day before had led police on a chase near Vancouver Mall.Spooner said Trigger got out of their backyard when a neighbor accidentally left a gate open. He left the comfy confines of their 3.6-acre property near Club Green Meadows golf course and headed south. Spooner said she’s surprised he headed in that direction.“Something must’ve scared him,” Spooner said.At about 11 a.m. Monday, a pony was reported loose along Highway 500 and Thurston Way. Numerous Vancouver police officers and Washington State Patrol troopers converged and found the pony in an area with a lot of traffic. Trigger was contained near the Vancouver Village shopping center, and Bill Burrus, a field officer for Clark County Animal Protection and Control, put a halter on him.Paul Scarpelli, manager of Clark County Animal Protection and Control, said the agency attempted to locate the owner but struck out and found a foster home for him through the Clark County Executive Horse Council Adopt-A-Horse program. Volunteers with the council’s program helped haul the pony and care for him until Spooner got calls from friends Tuesday morning asking if Trigger had escaped.