Different between new born squirrel and new born mouse

These babies had their nest cut out of a tree. The person that did it was able to collect 7 of them and bring them to me. I thought they were squirrels at first but now am leaning towards mice. I have been feeding them puppy milk every few hours. I have had them a week now and they are getting more active. Thanks for the help

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.

i think that it is plants