um 2-3 weeks they are in the hopper stage if eyes are open. it breaks down like this newborns-pinkies, have first signs of hair-fuzzies, eyes open and moving hoppers, aanything beyond that adult
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The mice we have kept their eyes closed for about two weeks. They would open their eyes from time to time but preferred to keep them closed, as the lights were probably too bright at first.
About...
They are probably about a week old.
You can see pictures of a rat litter (very similar in development to mice) at http://www.noselicks.com/shirelings/ The pictures show the daily changes in a...
Mice pups are blind, deaf and furless when they're born but hair will begin to appear after just 2-4 days. The ears open after 3-5 days, while the eyes remain shut until the pups are two weeks old....
Break an egg yolk (not the white) into a cup of milk, mix it up. Warm up a syringe full in a cup of hot water. The baby may take one to two drops every 20-30 minutes. A syringe may even be too big....