I'm not an expert but perharps I could give some feedback.
The 2nd shot in my opion is better then the 1st one. The 1st one seems to be out of focus (maybe you got too close), and looks overexposed. The 2nd one is good and I think a tighter crop will make it even better. Good job!
Errr..usually in incest world...the male is usually the smaller and weaker ones. and tend to get EAT up after mating! Dunno does it apply to this particular one