Quote Originally Posted by Bogertophis View Post
How many females? Best ratio to breed is 1.2 (one male, 2 females). More than that is chaotic & less fertile, in my experience.

How long to breed depends on many factors: age & health of the mice, the compatibility (some fight), the ratio, quality of food, suitability of cage, luck etc.
Temperature is extremely important...too cold inhibits breeding (like in winter), but fertility also disappears about 80*. 70*-72* is optimal. Mice have a high
metabolism...if they are too crowded, they'll be too hot sooner than if the cage has more room for them. (that's another reason that a large "harem" is bad)

Pregnant females get "fat" (pear-shaped)...I think you'll know.

Odor: hold your nose...mice do stink. Males more than females (for scent marking); cleaning more often helps but mice still stink.
I have two females and one male. I Clean the cage every 3 days. I don’t wash everything with soap I kinda just rinse everything and then dry it off with a cloth I keep specificity for the mice. and I use aspen shavings for bedding.


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