How long before mice get prenant.?

Question

Okay. i just got a mice and he is 6 weeks old. that was 2 weeks ago when i got him then 5 or 6 days ago i got a famale mouce a tad bigger than him. im guessing she is about 7 or 8 weeks old. they have been in the same cage for about 5 or 6 days do you think they have mated?

Answer 1

did u knwo they can reproduce very quickly. there was this lady that had 2 mice and she had them for a year, now shes has 1,498 mice in her house.

Answer 2

Why are you breeding? Think about it. Breeding is not a game... it's not a matter of just putting a male and female animal together. Mess with the wrong genes and breed the wrong animals and you could end up with some very sick babies. Do you know the mom and dad's genetic/health history at least three generations back? Pet store animals should never be bred, you know nothing about their health background. It doesn't matter if they seem healthy now or the vet gave them a clean bill of health... it's what's in their genes. There are more than enough small animals in shelters and rescues without more poorly bred ones being added to the overpopulation. There's a lot more to breeding responsibly than you might think. Please read and make a responsible decision:

http://www.petinfopackets.com/aboutbreed...

Answer 3

Yes; they mated the day they met.  Didn't you notice the chasing and squeaking?  The babies will be born in 14 to16 days.  

Mice are very predictable that way!  The gestation period is 20-21 days.

Answer 4

you should have researched first!!!!and why did you breed them? i dont like you very much. they can kill each other!dumb ***!!!!!!!!!

Answer 5

well, that was pretty dumb, huh? you should have researched breeding mice before you bred them. and by the sounds of it they might be too young to breed and you might end up killing your female in your stupidity. you should separate them until you know things about breeding. there are plenty of sites online, just google "breeding mice" and i'm sure you'll get tons of sites

Answer 6

Female mice are full-grown at 12  weeks old, breeding them younger than that isn't good for them because they aren't done growing themselves.  Often it will stunt her growth--she won't get as big as she would have--because she needs calcium for her own bones to grow and now there are all those little babies inside competing for the same calcium.  

It's possible, but not likely, that the little male doesn't know what he's doing yet, and might not have gotten her pregnant yet.  It's also possible, but even less likely, that the little female isn't fertile yet.  But it's most likely that they indeed mated and she's already a few days pregnant.

So, you have an underage, not yet full-grown female who is now pregnant, so she's going to need your help.  Make sure she has plenty of food and water, and I recommend getting some plain old vanilla yogurt drop treats and giving her one every day in her cage as a calcium and calorie supplement, because her body is working very hard right now.

Another thing you need to know, since I think you didn't do a lot of research before you started this.  If you leave the male in with her, she can get pregnant again the same day she has her babies.  Or the next day, or the next.  You need to separate them, because it's very hard on a full-grown, healthy female to have two litters back-to-back so that she's both nursing one litter and pregnant with the next.  You might lose her and all the babies if you let that happen here since she's so young.

When the babies are 30 days old, you'll need to take the boys out, too.  The boys can stay together in one cage probably for up until they're full-grown at 12 weeks old, but they'll usually start fighting then or before then, badly enough that you'll need to separate them.  Once you take one out, you'll probably need to keep each one in a different cage.

You can't put the boys in with their dad when you separate them, either--they'll fight until one of them is dead.  

So even if you're making feeders, you need to keep these animals in conditions where they'll be healthy and reasonably cared for.  If you're keeping pets, it's already time to start thinking about how many cages you are willing and able to maintain, clean, etc, and how many mice you can afford to feed every day.  The females can all stay together, but you need to plan on each male having his own cage.

Mice can have litters of 5 babies or fewer, or they can have closer to 15 babies at once, so you need to think about what you'll do with 15 mice that will be weaned about 30 days after birth, which will probably be in between 2 and 3 weeks from now.  Take good care of them!

So since you have