CNN|Added on April 18, 2012
National Zoo puts implantable recorders into gorillas in hopes of learning more about heart disease in the species.

http://i.cdn.turner.com/cnn/.element/apps/cvp/3.0/swf/cnn_416x234_embed.swf?context=embed&videoId=bestoftv/2012/04/19/gorilla-hearts.cnn