The first is a video of Lion & Penny playing. Lion likes to steal Penny's favorite toy (the squirrel) and taunt her with it.
Also, it looks like they are hurting each other but they aren't, promise! They don't actually bite one another.
Lion & penny - YouTube
In this one, they both just had a bath and so they are very wild! They usually do this for 30 minutes to an hour after a bath.
Bath time - YouTube