[Video description: Two people walk a black Labrador into an IDEXX testing facility where they take a sample from the dog. The sample is packaged and driven to an IDEXX laboratory where it is examined. Next scenes: a person playing with a black Labrador in a grassy enrichment area, a person walking a Guide Dog in Training on a lead, a Guide Dogs Trainer working with a black Labrador, and a Guide Dog Handler walking through a park with their Guide Dog.]