A photo of a German shepherd puppy in a K-9 vest has gone viral after a group that equips the dogs to work in law enforcement posted the image on Facebook, WFXT-TV in Boston reports.

The puppy, named Tuco, according to Boston Magazine, is 9 weeks old and being trained by Patrol Officer Troy Caisey, the head trainer of the Boston Police Department's K-9 unit.

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Massachusetts Vest-A-Dog is a nonprofit organization that has provided the Boston police K-9 unit with first aid kits and 26 vests since 2000.

The photo was posted to Facebook on Sunday as part of fundraising and awareness about a Massachusetts police dog calendar.

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Braves first baseman Matt Olson (left) is greeted by Ronald Acuña Jr. after batting during the MLB Home Run Derby as part of the All-Star Game festivities on Monday, July 14, 2025, at Truist Park in Atlanta. (Jason Getz/AJC)

Credit: Jason Getz/AJC