Hey! I just lost my first rat Navi, and she has therefore left her sister Zelda behind. I had Navi for a few months before we got Zelda. Since Navi wanted all my attention and Zelda was happy doing her own thing during out of cage time, I never looked too closely and how Zelda acts and works. Since Navi's passing, I believe Zelda is fine. She is eating, drinking, and we are giving her tons and tons of attention. I don't think she is sleeping any more than normal and before Navi passed, they seemed distant so I think she got used to sleeping alone. Im not sure what the major signs are to tell if she is going downhill. I of course was thinking of getting her a new cage mate(s), but she is about 1.5 years and I'm not sure if I should get a young one, a young pair, or adopt an older rat. I just don't want to make the same mistake as before when I got them months apart and now have a possibly lonely older rat. I work a lot (especially during holiday) and I am not sure if I can commit enough time to bring in cage mates, especially since it takes a while and two cages to do this. Any tips or experiences to share? I don't want a sad rat Thank you!