A video making its rounds on social media shows an engineer from a startup called Skild AI taking a chainsaw to the limbs of a robot dog.

The remarkable robot dog — or more accurately, its AI-powered brain — can even handle having its legs extended by wooden poles, or having wheels attached. Short of a rocket-propelled grenade coming ...

Limb-lengthening surgery promises extra height, but at the cost of broken bones, months of pain, and serious medical risks.