I really need some help. I have six degus, two I bought and four I got from a rescue. I was told the four from the rescue were all male. One happened to be a female and she is living with a male. I am not sure of the ages of the four from the rescue and the rescue people had no idea. At what age do degus get to old to breed? I couldn't find any information on the age degus stop breeding. I am not sure if she is pregnant. The female is building her own nest, whereas before it was usually just the male. She is not really getting fatter or bigger. And do degus get bigger as they get older, because three of the ones from the rescue are alot bigger then the two that I bought at the pet store.