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Once baby feeder mice are born, its practically impossible to tell the sex until they are atleast 10 days old. By that time, the baby mice will have matured enough to start forming their male and female parts. The females start forming 10 nipples on their under sides. The males won't really show much change until they reach atleast 5 weeks. As for older feeder mice the female should have 10 nipples, and their genitals will be close together. As for the male, he should have testicles and his genitals will be further apart.
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∙ 12y ago
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How can you tell if baby mice are alive or not?
if they're breathing
Can you tell the sex of a baby with the heartbeat?
no
How old do baby mice have to be in order to tell there gender?
If you know your rodents, you should be able to tell the gender of baby rodents at birth (I can).
Are there any pregnancy symptoms to determine the sex of the baby?
No the pregnancy test lone will not tell you the sex of the baby.
When can the baby mice be separated?
Baby mice can be separated once they can see and hear and have fur as long as you can tell the difference between a boy and a girl. Because mice can have babies when they are 4 weeks old!
How do you tell your girlfriend you want to have?
Have what ? sex? a baby?
How can you tell te sex of your baby from the heart rate?
No
Why cant you tell the sex of a baby at 4 months?
The baby's genitals aren't developed enough to tell yet.
At how many months can you tell what sex your baby will be?
5 months.
How do you tell the sex of a baby hamster?
you should as the vet to find out
How many months do you have to be before you can tell the sex of the baby?
5months
What week can you tell the sex of your baby?
Around week 18
