Everything was fine today and he was feeling normal until around 9 pm when I noticed that he was walking on his back knuckle. I took him to the emergency vet around 9:30 and stayed there until 2pm. They couldn't find anything wrong with him [ bone-wise ] but they said it might have something to do with his nerves and such... They really can't pinpoint what the problem is.
They gave me Amoxi drops and Prednisone tablets and I am just sitting here crossing my fingers that he gets better.
If anyone have any thing to share, please do