I found a listing online and adopted a pair of female rats 2 months ago. According to their previous owners, they're around a year old (were found as feeders at a pet store). Due to their poor breeding, age, and lack of informed care in the past, I know I need to be prepared for one's passing in the upcoming year. However, I don't know where I can find them another companion. I was thinking of adopting 2 babies to keep the line going, but am totally open to an adult as well 