Here is another kit that comes with almost everything you need to build your own smart robot dog. The Lynxmotion mechDOG Quadruped Robot lets you build a 12DOF robot. It is designed to work with Raspberry Pi, Arduino, and other sensors. This robot has modular aluminum brackets and G10 body plates.
The mechDOG has 4 x TPU 3D printed feet. It has modular plates for your ultrasonic/IR sensors and mounting holes for the Lynxmotion BotBoarduino, Arduino UNO, Lynxmotion LSS-2IO and Raspberry Pi.