According to Homer, Hephaestus built automatons of metal to work for him or others. This included tripods with golden wheels, able to move at his wish in and out the assembly hall of the celestials; and servant "handmaidens wrought of gold in the semblance of living maids", in them was "understanding in their hearts, and speech and strength", gift of the gods. They moved to support Hephaestus while walking. And golden and silver lions and dogs at the entrance of the palace of Alkinoos in such a way that they could bite the invaders, guard dogs that didn't age nor perish.

https://en.wikipedia.org/wiki/Hephaestus#Automatons