Puppy Bowl XXI is the 21st anniversary of arguably the cutest pre-Super Bowl event. The "competition" each year has two teams of dogs from shelters and rescues around the world facing off in a football game. The event encourages viewers to consider adopting a dog from an animal shelter or rescue rather than a breeder.

The Super Bowl is happening this weekend, and if you also enjoy sporting events with tail-wagging, toy-tugging and miniature limbs, you can watch good boys and girls face off in the 21st Puppy Bowl. Puppy Bowl XXI will showcase 142 rescue puppies from 80 shelters -- the biggest canine cohort yet -- before the Super Bowl airs at 6:30 p.