This video, taken by Kristina Shafer, seems to portray an arctic fox laughing. It is, in fact, asking if the room can be tidied up.
Kristina has cared for Archer the Arctic fox since he was young. He's now four years old, and he's learned that laughter is infectious. This video shows Kristina's boyfriend laughing, then Archer responding with a giggle of his own. This is Archer's typical behaviour when he's sleepy; perhaps a sign that he's looking forward to a funny dream.