A New York Home Depot has deployed a guard dog — and other stores may be close behind — to protect shoppers from aggressive migrants and thieves flooding their parking lots, The Post has learned.

Two men wearing MSA Security caps and bulletproof vests with a German Shepherd in tow patrolled the Home Depot in New Rochelle on Tuesday.

“It’s more about omnipresence,” one guard said, explaining that the company was contracted a few weeks ago. “It’s not like we let them go bite anyone or anything.”