My 5 y/o Lab had recent bowel obstruction surgery, a few weeks later after being treated for pneumonia/ esophagus issues, he started panting fast in the evenings and got wobbly legged in the rear. In the am he completely looses function, for about 4/6 hrs then is wobbly at best. Very odd!

We looked at Myasthenia Gravis posts, but this doesnt fit all signs and symptoms. Appetite is returning to normal.

Ideas???