The sound's been muted by Google/YouTube, unfortunately, because it contained a Beatles song ('Here Comes the Sun'), but there are subtitles, and you get the idea. These beagles had never been outside their cages and laboratory before, and at first are timid about coming out of the crates, but are obviously desperate for companionship. I am so glad they are out of those conditions. For more information, check out the Beagle Freedom Project. Here is a snippet from their 'About' page:
Beagles are the most popular breed for lab use because of their friendly, docile, trusting, forgiving, people-pleasing personalities. The research industry says they adapt well to living in a cage, and are inexpensive to feed. Research beagles are usually obtained directly from commercial breeders who specifically breed dogs to sell to scientific institutions.
Testing done on beagles in university and other research facilities includes medical/pharmaceutical, household products and cosmetics. When they are no longer wanted for research purposes, some labs attempt to find homes for adoptable, healthy beagles. Working directly with these labs, Beagle Freedom Project is able to remove and transport beagles to place them in loving homes. All rescues are done legally with the cooperation of the facility.