lonely

Hi all, So I had an accidental litter due to my rats being incorrectly sexed, and now the mama and babies are being held in a separate container. Her cagemate, my rat Yuki, is now alone in a big critter nation. He was very bonded with Tohru (the female). He doesnt quite know how to play with me...

I currently own 3 boys and 2 girls (housed separately). I have had my boys for the longest but recently one of the boys (Teemo) has started acting quite aggressive to the other two (biting ears and scratching). I have separated him from the other two and have tried to re-introduce them multiple...