Sexual selection in cats or other animals
Wilson and Reeder (Mammal Species of the World) count 40 species of Felidae. Most of them are small cats (subfamily Felinae). Lions are in the subfamily Pantherinae, which contains only 6 species, one of them the jaguar, Panthera onca, which is solitary, like the tiger, Panthera tigris. By what I know of small cats, Puma concolor included, and the tiger and the jaguar, it seems that lion social behavior is not typical of felines. (Would add that as a comment, but can't comment with reputation &lt; 50).

EDIT:

Looking for "Felidae sexual selection" or 'Felidae "sexual selection"' in google I have found some links. Look for "sexual selection" or "Felidae" in the text. Though I'm afraid most of them are not exactly what you're looking for, maybe they can open new windows of thought. Hope that helps!

http://www.journals.elsevierhealth.com/periodicals/aaeth/article/0304-3762%2883%2990116-5/

http://www.catsg.org/cheetah/05_library/5_3_publications/E/Eaton_-_The_Evolution_of_Sociality_in_the_Felidae.pdf

http://onlinelibrary.wiley.com/doi/10.1111/j.1095-8312.2010.01520.x/pdf

http://www.jstor.org/discover/10.2307/3544917?uid=26584&amp;uid=3737664&amp;uid=5909624&amp;uid=2&amp;uid=26582&amp;uid=3&amp;uid=67&amp;uid=62&amp;sid=21103320511793

http://en.wikipedia.org/wiki/Machairodontinae

http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0048352?utm_source=feedburner&amp;utm_medium=feed&amp;utm_campaign=Feed%3A+plosone%2FPLoSONE+%28PLOS+ONE+Alerts%3A+New+Articles%29

http://books.google.com.br/books?id=FhvmHW972mAC&amp;pg=PA752&amp;lpg=PA752&amp;dq=Felidae+%22sexual+selection%22&amp;source=bl&amp;ots=Ns8iRUQxXW&amp;sig=r5ZEgp-nH9mll5cYgB5GzNaThZs&amp;hl=en&amp;sa=X&amp;ei=FBPQUq63LPDLsQS0m4DAAw&amp;ved=0CDYQ6AEwADgK#v=onepage&amp;q=Felidae%20%22sexual%20selection%22&amp;f=false

http://www.mapoflife.org/topics/topic_203_Baculum-%28penile-bone%29-in-mammals/

http://www.sciencedirect.com/science/article/pii/S0169534703003999