Insert your card <a href="http://www.intebuild.com/index.php/stmap_55960.html?viagra.lasix.dydrogesterone.azelaic">cialis 20 mg tabletti hinta</a>  The first coordinated effort at captive breeding began in the 1980s, and about half the initial 40 breeding rhinos died without a successful pregnancy. Roth, who began working on the rhino project in 1996, said it took years just to understand their eating habits and needs and decades more to understand their mating patterns. The animals tend not to be interested in companionship, let alone romance.