While a 2-foot high stage would be great for larger dogs, I would suggest a higher level stage for the toy sized dogs. I agree than shooting from dog's-eye level (or lower) is best.

I have been shooting mostly Maltese for which the AKC standard is 4-7 pounds. I use either a large coffee table which is about 2 feet high or an old dog grooming table which is a bit higher. It is easier to shoot the toy dogs using the higher table. I have jury-rigged a backdrop holder from PVC pipe. While, I also have a traditional folding backdrop holder but, the PVC model is actually more handy for shooting.

I have a variety of backgrounds made from velvet, fleece and other interesting materials. These do very well with the small dogs which I have been shooting. You can also find interesting BG material as remnants at upholstery supply shops.

While the table setup is great for small dogs, I will soon need a lower and larger stage. I have a new Goldendoodle (golden retriever-poodle cross) puppy and will soon need to use a more traditional sized background and elevated shooting stage because she is growing like a weed and will be 50-60# when full grown.

I would also scout your area for natural outdoor backgrounds which would be suitable for larger dogs. Some larger dogs, especially the sporting varieties really look good with natural backgrounds.

By the way, using a right angle viewer can help you get shots from somewhat of a lower lever without breaking your back.