TIL Arctic Shrews are solitary animals. One study showed that if you place two shrews in the same cage, one will be dead within days, even without showing any signs of injury

Read more: https://en.wikipedia.org/wiki/Arctic_shrew#Behaviour

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  1. Rabbits can get so stressed they just drop dead. It’s strangely common among small mammals.

    The article specifically states these shrews have an insane metabolism.

    So my guess is they were so stressed from the close proximity either one burnt through all their calories and died, or had a stress induced heart attack.

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