I adopted Finch and Sparrow (formerly Calvin and Hobbes) last May and they are doing very well! I introduced them to my other rats and they are all good friends. Finch and Sparrow are very adventurous and enjoy exploring outside their cage, climbing, and digging in miniature gardens that I make for them. They also enjoy “helping” when I am working on my laptop! They are very sweet boys and I am so glad I adopted them.