As far as anyone knows, this is the only zombie that clearly laughs. In addition, if you see a fast moving zombie, chances are that it is a laughing zombie. The faces of this particular strain of zombie are contorted into something between a large insane smile and an open mouthed scream.
This has been the fastest zombie that the group has interacted with. With its speed it tackles its targets to the floor before biting them. This disables their target from attacking and puts them in a favourable position to attack.
Tackle: With a running start the laughing zombie is able to knockdown a target and land on them. Quick reflexes are required to dodge this attack.
Bite: The primary attack of the laughing zombie is to bite any pinned targets. A bitten target has a chance of receiving the infection.