[Valpal1]

Wikipedia is not a valid source: http://en.wikipedia.org/wiki/Wikipedia:Introduction

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[conserv13]

Wikipedia is not a valid source

http://www.sciencedaily.com/cgi-bin/apf4/amazon_products_feed.cgi?Operation=ItemLookup&ItemId=031225377X

Here is another source. I haven't read the book but that is the main source that others cite for saying that some animals exibit homosexual behavior.