BOGOTA, Colombia - Watch out Fido — your days on the force may be numbered. Out for your job are Lola and Espejo, two whiskered, red-eyed rats that police in Colombia are training to sniff out bombs and land mines. The two rodents are part of an experimental six-rat squadron that police are preparing for dangerous missions to defuse the more than 100,000 land mines that litter Colombia's countryside after four decades of war between the government and leftist rebels. Unlike dogs, rats weighing less than half a pound each and "don't trigger any explosions when they walk on a...