Marc Raibert, the founder of Boston Dynamics, gave the world a menagerie of two- and four-legged machines capable of jaw-dropping parkour, infectious dance routines, and industrious shelf stacking.

Imagine spending your weekends free of chores. Forget about the laundry, the dishes, and tidying up. It’s all been taken care of. And the one responsible is an amalgamation of motors, wires, and ...