This seems like it's been forever.
The head vet reviewed Beau's films. They did see something that no one else did. Everyone is in agreement that there are no cancerous lesions. (thank GOD) His knees and hips are a "non issue". There is arthritis in his right toe but that could not be causing the lameness and pain that happens frequently.
From the pictures of Beau laying on his back, there are disc spacing issues. The next step would have to be an MRI but the vet does not feel it's necessary at this time.
She did say that we may want to try acupunture. Teddy goes every other week for maintenance so we may be bringing Beau to start.
At least we have some answers. Nothing totally concrete, but we are starting to narrow it down.
In the meantime, he has been GREYT, happy, crazy and totally, totally lives for his walks.
Thank you all for your prayers and well wishes. It helps in so many ways.