I know with primates, humans included, females desire to mate more when they are ovulating. Most female mammals only except a mate when ovulating. But there are species that do it 1, to do it, and 2, for social structure.



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Shannon in Reno
1.0 savannah monitor (Pombe-means "beer" in Swahili)
2.4 dogs
1.0 cat
5.32 rats
6.44 mice
7.50 chickens
1.2 beardies
0.1 black rat snake
~500 hissers
1 giant millipede
0.1 Chissel tooth kangaroo rat
1.1 rabbits
1.0 wonderful husband

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