Some mice dieing suddenly

[hungba]

I know that when you have a litter of pinkies, occasionally one or two die before they get weaned.

However, the last few days I noticed a few mice suddenly died. First, one that had just been weaned recently started eating on its own, died. Then the next day, one more of the siblings in the same boxf, as well as an adult female in another box, and one more pinky dies.

There doesn't seem to be any wounds they just seemed to die.

Is this a common occurence? or is there something wrong?

I keep them in the same room as the snakes. Is that a problem (for either snakes or mice)?

I've kept them probably 4 or 5 weeks or something and thus far basically none died before this other than some pinkies and some were eaten, but suddenly even a few that were eating themselves died. It all happened within 48 hours. I will be on the look out to see if anymore die but please let me know your thoughts.