That is intriguing. Did the Husky drop some greens in front of the buttoned up tortoise so he investigated? If so the Husky is a pretty smart dog.
Only box turtles can button up. The average tortoise can tuck in a little but they don’t have a box turtle’s jointed plastron to close and a pointy-nosed dog can still rip up the legs, esp. the rear ones, because they are exposed.