If this doesn’t improve your day, I just don’t know what will. Before the National Zoo’s lion cubs can be allowed into the lion yard with their mother, they have to be able to swim in case they end up in the moat. So the 8-week-old litter of cubs, the older set, took a swim test today, with handlers placing them in the water about a foot from the edge and watching them swim back. Of course there are photos, but you know you want to see video. Be sure to watch all the way through to the fourth cub. She decides she likes the water and instead of hurrying back to the side, she tries to swim some lengths. Video after the jump.