Aw. My sympathies for your loss. That is awful.

Things to try that are as good as a binge, biochemically -

- really loud music
- take a baseball bat and hit the bed or some tires out back until you're exhausted
- any other physically exhausting body stuff
- performance art! go to Radio Shack, buy a power horn, then go to your town's highest overlook and tell the world your grief and how great the cat was

(these are all endorphin highs)