I can not answer questions on why your Hamster or Gerbil died. Obviously I do not know, so I will not answer that question. If you suspect your pet is sick, please consult a vet. I can answer questions on your Hamster's or Gerbil's feeding/dietary needs, health, dental issues, breeding, cage setup, getting started, what you should look out for, diseases, and if I don't know the answer I will look it up and give you an answer. I will try to answer all questions right away.
I have had a great experience with Hamsters and Gerbils. I have had over 10 Gerbils and I have had over 15 hamsters. I still to this very day have Gerbils and Hamsters. I breed them too.
I am going to college right now to be a veternarian.
I used to have a website where you could ask questions on pets and I would answer them, but then I found out about this site and I thought it would be fun and cool to do.
I also have put accurate information on wikipedia about breeding hamsters and gerbils.