I have a load of experience with gerbil intros, but this one I want some advice on from experts.
Pearl died leaving Polly alone. Polly always seemed rather sedate and calm.
I got Marge, a youngster; friendly and calm.
Neutral territory, new smells, split screened for three days with the separated gerbs moved to each other's side every 9-10 hours or so.
Screen removed. Closely watched for two hours, and watched off and on for two more. Marge seemed a little nervous, but Polly did not seem aggressive, although curious. I left for twenty minutes, and when I came back Marge had a big bite near her tail.
So they got permanently separated, and Marge is fine.
That same day, coincidentally, Tina died of natural causes, leaving Doreen alone.
So. . . should I even attempt to introduce Polly to another gerbil (Doreen or another) or is she the kind who would resist meeting any new gerbil? Polly is somewhat over a year old.
I will try putting Marge and Doreen together next week. Polly? I don't know.