Watch out, drug-sniffing dogs: You’ve got some competition.

According to an MSNBC.com article posted this morning, a turtle fitted with a GPS device meandered into a remote area of Rock Creek Park and led a National Park Service employee to a marijuana-growing operation.

A National Park Service employee was tracking a turtle with the gadget for research when the turtle wandered into a small marijuana field in a remote part of Rock Creek Park.

U.S. Park police were called and surveillance was set up to monitor the area. Police discovered a man taking care of about 10 marijuana plants in the field.

U.S. Park police and Montgomery County police arrested Isiah Johnson, 19, in Chevy Chase Wednesday.

Nice work, little turtle. I bet Mr. Johnson wasn’t expecting to be caught like that.