Hiya, so I have two female rats. My one rat Trixie is playful happy and naughty and we have a second rat which is Clara and she’s very shy. When both are let out the cage; trixie will run and cause trouble and Clara will slowly walk somewhere and just hide. Both rats are about 10 weeks old; Trixie is quite big and we are happy with her size but Clara is so much smaller she seems to be a ‘runt’ we love them both dearly but we are worried if something may be wrong with Clara or is this normal? Also to add Clara squeaks a lot not so much when picking her up but even when she’s sleeping.