I recently found a male rat and his cage online for a good price, and I'm a bit concerned about his behavior. he's been a lone rat, though I don't know how old he is, or if he's ever had a cagemate. What are some things I should be on the lookout for if I decide to adopt him? His owner his rehoming him due to lack of time and attention, and if he's been alone I'm expecting him to be depressed. There's another rat who looks about the same size from someone else up for rehoming and I'm considering getting them both so that they have a buddy. Would it be better to get them both at the same time, get them through immersion, and then intro them to each other, or should I focus on one ratty at a time? This may all be for naught, as I won't be able to bring anyone home for at least another month.