sorry its been so late, i haven't been able to reply.

At the Dr. visit they pretty much told me that his body is toxic and that he doesn't have allot of time left. She said that he's at the last stages of kidney disease. She gave him some fluids to hydrate him, which worked because when we got home he was actually eating again.

2 days later (on Monday) i get a call from my brother, he's crying and saying that he thinks Tiger is dying. I automatically rush home. When I get there Tiger is completely unresponsive. He couldn't even hold his head up. 30 minutes later he passed away with my brother and I right by his side. It was heart wrenching to know that my other half has actually left this world, but i knew it was best for him. He would of been 16 in May.

Maybe a week in a half before his passing, Tiger would sit right next to the door and when it would open he would just walk out. which is not normal for him, he would hang out BY the front door but not when we were all home. We also noticed that he was hanging out underneath the beds more often than usual. I would try to get him out but he wouldn't even meow back, which is also not normal.
My mom learns that when a cat/pet knows that their about to leave this world they try to find a comfortable spot to pass away in that is away from their family. So he was trying to leave the house so that he wouldn't pass away in front of us. Supposedly they do this to protect us. Him going under the bed meant the same thing.