If the "People" I've known are any example, Wolves not only laugh (a sort of whuffle sound with a smile) but play jokes on each other.
A female had a sort of "toy"; a burlap "ball" stuffed with straw that was "Hers". Her brother would wait until she was away from her resting spot, and then carefully pick it up and put it with the other "enrichment toys" in the enclosure.
His sister would hunt all over to find her toy, and then take it back to her spot. As soon as she left, her brother would take the toy and return it to the pile of toys. Then he would wait and "whuffle" as she scrabbled all over the place looking for her toy again.
Eventually she caught him. While there was no bloodspill, she made sure he understood the ball was hers.
A day later, another wolf snuck the toy out of her spot, and took it back to the toy pile, then waited. As soon as she saw that her toy was gone, she took off after her brother, while the wolf who actually did the deed, "whuffled" as he watched.
Oh, yeah; they cry, laugh, and play jokes on each other.
