I think this is a still frame which is suffering from severe motion blur which creates the illusion of a human-like shape wearing a wolf or fox mask.
I bet if they search the immediate area in daylight they might find something which explains it.
我认为这是一个静止的帧，它受到了严重的运动模糊的影响，产生了一个戴着狼或狐狸面具的人形的错觉。
我敢打赌，如果他们在白天搜索附近地区，他们可能会找到一些解释。