GoodBoy is a robot dog that runs on Arduino | Arduino Blog
Critter: Crawling Arduino Robot - Hackster.io
How to Make a Walking Robot - Hackster.io
Amazon.com: ELEGOO Penguin Bot Biped Robot Kit Compatible with Arduino Project with Assembling Tutorial,STEM Kit for Hobbyists, STEM Toys for Kids and Adults, Black Version : Toys & Games
Build a walking robot that can be controlled using Bluetooth