Petoi Bittle X

The Bittle X proves a real robot dog doesn't have to cost thousands: for $319 you get a quadruped that walks, does tricks, responds to voice and is programmable in Python. It's the favorite for gifting, learning robotics and tinkering without fear.

It obviously doesn't compete with a Go2: it's small, simple and lacks advanced sensors. But as a gateway into legged robotics, nothing beats it for the money.