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Is your Rat a male or a female?

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2320080610121941Rat

Male rats have a large scrotum, making them easy to differentiate from female rats. Also, the distance from the anus to the genitals is roughly twice as long in male rats as in female rats. Only female rats have nipples.

Families interested in breeding their rats must first decide how to find homes for all the babies. Then, some preparatory reading is recommended. The average litter is 12 and the gestation period is 21-23 days. The babies should not be weaned until they are 4-5 weeks old.

Credit: Used with permission of the Zoological Education Network.
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