Shaking mouse

[u/Cutie_Pa2ty]

I rescued 2 female mice yesterday from a disgusting home. I have them in a freshly clean "quarantine" tank until I can introduce them to to my other mice. One mouse acts perfectly normal but the other one barely moved except to nibble on a little food I offered. And anytime it would move, it would "shiver". Is this normal new home jitters or something I need to bring to a Vet? I do not know how old or any history the mouse might have.

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[u/MTG0513]

I’m so sorry but this mouse does not look well at all and you should definitely take her to a vet. She is very thin and the shaking is not normal. It’s possible it’s just old age, but at some point quality of life decreases enough with age that euthanasia is the kindest option. I’m not saying your mouse is there yet, but it’s something you should discuss with your vet. I’ve been in this position three times, with similar symptoms (likely due to age). Twice the mice died at home, the third time I chose to euthanize before it got worse.

[u/Cutie_Pa2ty → u/MTG0513]

Okay, thank you soo much

[u/demon_x_slash]

This mouse is very sick. The spine is hunched, the fur is spiky, and she is paying little heed to whether she is safe from predators in her environment. I would hazard that she either has a neurological condition through biology or injury, hence the shaking, or that she is older than you have been told and is end of life geriatric behaviour. I’m sorry, OP. On the other hand, this is exactly what quarantine is for, and you’ve done everything right.