What is a guinea defence in the wild?

There is no "guinea defence" in the wild. It's likely you're thinking of a term related to a different context.

Could you please clarify what you mean by "guinea defence"?

Here are some possibilities:

* Guinea Pig Defence: This is not a specific defense mechanism. Guinea pigs are prey animals and rely on speed, agility, and hiding to avoid predators.

* Chess: There's a chess opening called the "Guinea Defence", which is a rather unusual and unsound response to 1. e4.

* Other contexts: Perhaps you're referring to a specific defense tactic used by an animal or a group of animals, or something else entirely.

Please provide more context so I can give you a more accurate answer.