This is my second version of my canine bot. I improved the feet so they grip better when it walks. I had to modify how the brick attaches to account for the added depth of the rechargeable battery. I also changed the bark to a growl which you can see in the video when an obstacle obstructs it at 25 cm. I changed the strength of the legs by adding a beam, removing the play in the ankles on each leg. I also changed the ears so they look more like a dog and less like a cat.