I'm so sorry!
I can really relate to how you feel- when I was 13, my iguana saved my life. I had her because no one else wanted her, she was soley my responsibility, I felt we were both in the same position- if either of us died, no one would care. So I stayed alive to take care of her, and her life saved mine...
Now, I also have two dogs. I love them to death, although my family loves them too, so when I'm feeling down, I don't look to them as a life line, as I do my iguana.

I'm so sorry for your lost, I don't know what I would do if any of my babies where to pass on.
~*~Sending love and strength your way ~*~
Bella