My female Rat Nut, who up to 2 weeks ago was a very active, cheaky little thing, Is now a completly different Rat. She really used to be wide eyed and quick, now she's very soppy, slow and very clumsy. She takes food and can't hold on to It properly, she finds the most simple uphill walks a challengere In her Cage, I saw her ealier struggling to walk up the ramp to the next level. Basically she Is very slow and not eating properly, there Is also what looks like black stains round her right eye, dunno what that's about. She's only 20 months old, could she really be on her way out already?