How to Cross a Piranha-Infested River
[1] Do not cross if you have an open wound.
Piranhas are attracted to blood.
[2] Avoid areas with netted fish, docks where fish are cleaned, and areas around bird rookeries.
Piranhas may become habituated to feeding in these areas and may be more aggressive there.
[3] Stay out of the water when piranhas are feeding.
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