Mice breeding question

I'm trying to breed mice for the first time and I have a few questions. Do mice "get it on" if the female mouse is already pregnant? The reason i'm asking is i've had this pair of mice for a week or so and I haven't seen it happen once. :taz:

The first pair of male/female mice I bought I saw it within 30 minutes of putting them in the cage. They died and then I bought a new male/female.

Is there any way to tell if the female is pregnant? The belly doesn't look abnormally big. I weighted them both and the male weights 16g and the female weights 18g. :snake:

Thanks

Once the female knows she's pregnant she won't allow any mating although she can begin mating again right after she gives birth. It's hard to tell when a mouse is pregnant until the last few days where you will see her getting a little plump and a noticable rounded stomach. Where the mice living together when you got them?

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Originally Posted by BaLLPAddICT

Once the female knows she's pregnant she won't allow any mating although she can begin mating again right after she gives birth. It's hard to tell when a mouse is pregnant until the last few days where you will see her getting a little plump and a noticable rounded stomach. Where the mice living together when you got them?

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At this perticular store where I picked these up yes, they were all in one cage

she may already be pregnant i tried breeding and after 2 months of absolutley nothing i gave up and threw them in with my snakes.

Quote:

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Originally Posted by sg1trogdor

she may already be pregnant i tried breeding and after 2 months of absolutley nothing i gave up and threw them in with my snakes.

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Nothing yet, i'm giving them a 2 month time limit too before they end up as food.

I thought this would make a cute pic:

http://i122.photobucket.com/albums/o...t228/mouse.jpg