Mouse panting

Question
My daughter's mice just had their baby's and the male 'LUIGI' is losing a lot's of weight and panting lots' he is quite listless, but the female is doing well and so are the baby's but not the male.

Answer
Dear Ren,

Luigi's trouble has nothing to do with the arrival of his children.  If Luigi is over 18 months, it's likely that he is showing symptoms of old age.  These symptoms can begin quite quickly, and the mouse can age seemingly overnight.  However, if he is a youthful mouse, he should go to the vet because he is sick.  Mice die quickly, so he should go right away.

I wish Luigi the best of health.

squeaks,

Natasha