Rats are fighting!!!

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Originally Posted by snakesRkewl

This is a biggie for me, I raise all of my groups together right from weanling size and the females almost always hold off the males advances until they are 10-12 weeks old and then they drop litters around 14-16 weeks old.

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Well yeah once they get to that certain age they get separated. That's kind of common sense to most people. :)