Puppy cart prototype 1

This is my first draft at a printable frame for a wheeled cart for a disabled puppy.

Problems I'm running into:
- I printed the draft in low quality, so I don't know how much of the structural problems have to do with the low quality, and how much is design flaw. (The rounded bar where the dog's legs can rest, connecting both halves of the cart are particularly flimsy.)
- The framing is 1 cm in width, which will have to be widened at least where the wheel axles go, if not around the entir