Fully tattooed MMA fighter acts hard during the weigh-ins and then gets knocked out in 20 seconds.

Family watches two raccoons in the backyard performing the 'Heimlich Maneuver' on each other.

Octopus tries to escape from its tank at the Seattle Aquarium.

Emotional moment when a father of 4 hears silence for the first time in over 10 years.

Cat hugs its dog friend after not seeing him for 10 days.

Anderson Cooper responds to Conan O'Brien's CNN breaking news parody.