News Animals Peril of play Chimpanzees that romp and roughhouse together are vulnerable to infectious diseases Share this:FacebookTwitterPocketRedditPrintEmail By Rachel Ehrenberg June 20, 2008 at 9:38 am This article is only available to Science News subscribers. Subscribers, enter your e-mail address to access our archives. Client key* E-mail* Log in Not a subscriber? Science News is a nonprofit. Support us by subscribing now. Subscribe