MONTERREY, Mexico — An escaped pet tiger named Deborah spurred a massive deployment of police, firefighters and other first responders in the northern Mexican state of Coahuila, authorities said. Apolonio Armenta, the Coahuila delegate of Mexico’s environmental protection agency, Profepa, told Efe that alarmed residents began calling police late Dec. 28 with reports about a tiger roaming the streets of Saltillo, the state capital.