I got Oreo as a feeder rat 2 years ago. We were at the petstore getting some pet food, when I saw her in the feeder rat bin. I thought that she was just too cute and friendly to be a feeder rat, so I purchased her. She soon became my absolute best buddy. It took her a long time to get used to the other rats, but when she did, they three of them became best buddies. One day, a tragic accident, involving my pet rat, Ziggedy, and my little brother, hapened. Ziggedy didn't make it. I was crushed! But I still had Oreo. This made me appreciate her even more. She was a very fat rat; she loved her food. She would jump on the bars of her cage, and snatch food so hard you she might take your finger if you weren't careful. She was such a funny girl. Then, one day, her last cagemate, Mocha, died from a tumor. Oreo became very depressed, and very lonely. She became more friendly towards me, so I held her more often. One day, I was heartbroken to find the beginning of a large tumor on her chest. That terrible thing grew until it was the size of a marble, them she had another one under her tail. It grew as big as a man's thumb. She started losing weight and she stopped eating and drinking. We knew she didn't have long. She died in her sleep on January 18th, 2013- RIP Oreo. You were the sweetest little thing ever.