My real-life mechanical Wobbledog!!
I ended up talking about the creation process in detail in the post's description but I'll put it in short here:
The base of the dog is an upcycled walking, barking mechanical toy dog. I shaved the plastic down to fit the body shape I wanted, getting rid of the barking mechanic in the process (a small sacrifice to make). Then foam board was added to give that boxy shape, sculpted the legs and head with modeling foam, added felt and paint to the respective parts, then attached the head to the body with a spring for additional wobbly movement when walking.