SOUTH PORTLAND — The city of South Portland’s police dog Trigger is one of 16 police dogs in Maine that will receive a bullet- and stab-proof protective vest.

Lt. Frank Clark of the South Portland Police Department said Trigger’s vest is being paid for by Vested Interest in K9s Inc., an all-volunteer charity organization based in East Taunton, Mass.

Since it was founded in 2009, Vested Interest in K9s has provided more than 443 protective vests to police dogs in 37 states. Each vest costs $950 and is warrantied for five years.

Clark said the dog vests in Maine will be purchased with a $15,000 grant provided to Vested Interest in K9s Inc. by The Petco Foundation.