Good bye, rabbit

It was many months ago when I noticed that our rabbit did not gain weight even though he ate none stop! However, he had been eating normally until two weeks ago when he suddenly became very weak and could not even stand on his four feet. 

I knew something serious was happening to him. Over the last four days, he lost his appetite and ate very little. Yesterday, he hardly ate anything. But he remain high in spirit. This morning, we found him dead...
We already started to miss him...
... every time I see his empty cage.
Sad... I don't think we are going to keep another rabbit. Good bye rabbit!