As 10-year-old Jackson Whelan listens to the heartbeat of a dog at Mississippi State's College of Veterinary Medicine, his 6-year-old brother Sawyer Whelan observes. The Lynchburg, Virginia, residents were among school groups touring campus Friday [April 1] as part of the CVM's 31st annual Jurassic Bark Open House. Taking place through Saturday [April 2], the open house that is free to all features a petting zoo, animal show and roping demo, among other fun activities. Click here for more event details.