Training or choice?

[heavyhorse]

9 hours ago, silverwolf1 said:




Or is it a conscious choice made by them because they want sex with a species other than their own? 

This is often the case when:  1) they have been raised with a species other than their own (human or other) for so long that they have come to regard the other species as one of their own, and 2) they are in estrus.  They are a lot more flexible in their choice of mates at that time; a different species male that she considers one of her own is likely to be solicited and accepted.  




Although since most female animals spend most of their lives out of estrus, and the instinct is usually to avoid sex out-of-estrus, the choice or solicitation to do so during that time is likely "a behavior & reward system".  Although I think that terminology is short-changing her taking initiative to knowingly decide to do what she wants to do for her own reasons.  




Male animals are a different case, since they are required by nature to recognize and act on signals and opportunities (within seasonal hormonal fluctuations), so recognizing variations on those signals is likely more instinctive for them than it is for out-of-estrus females.