Depends on from what temperature, to what temperature, the size of the mouse and for what purpose you're warming it.
If you are intending to feed it to a snake (or other reptile) from frozen, a pinky mouse should sit at room temp for a couple of hours or in a cup of slightly warm water for about half an hour. A full size mouse will take several hours at room temp and an hour or two in slightly warm water. I would recommend placing it in a plastic zip type baggy before you do either (definitely before you put it in water). Check the temp with your finger (on the outside of the bag, so the mouse doesn't smell like you) it should be right at room temp when you feed your snake.
Personally, I would always let them thaw either all day while I was at work, or overnight.
Never microwave your mouse or use hot water, this will cook the mouse which will provide less nutrients to your snake, and possibly make it not taste good to the snake (causing the snake to not eat or regurgitate it).
Also never feed your snake a cold mouse, since the snake is coldblooded it could make them sick.
Up to 21 days
How long it takes a car heater to warm up depends on the temperature outside. In cold weather the heater can take several minutes to warm up.
depensds how hot it is andwhat temperature you mean by warm.
about 20 minues or so
she is doing that to keep them warm... Dont do anything.. let the mouse do what it is doing.
warm. because cold air causes ur muscles to contrast and it also doesnt take as long to warm up in warm as it would in cold
A warm coat and warm snow type pants with long johns underneath.
No more than 40-60 seconds realistically
It takes the hours it took the sun to rise a day
where did you find this mouse? was it in your house or out side? you can get out some whole milk and warm it up but not to much or it will burn the mouse and how long have you kept it for? you can get a cage or some thing to hold the mouse and get a heating pad so it will keep the mouse warm. and try to contact a rescue! for more info contact boodadah I have also just find a baby orphaned mouse and what i have done is; warm up some milk and put it in an eyedropper and force feed it or it might not survive, make some warm bedding, put a light over it, bring it outside in a box for some fresh air, if its eyes are still cloed keep wiping them if you think there 2-6 weeks old (not rough), pick it up every other hour to get it used to people. Hope this works! Good luck! P.S. for costapated mice pute honey in the milk. And mice arnt picky so if you hear that cats milk is better, it doesnt matter!
Most likely a defective thermostat.However,remember that there is a lot of metal in the engine block that has to heat up too.
The specific heat of water determines how much energy is needed to heat water.