Well, piranhas eat in schools. Like other little fish. They also can eat a cow in a short amount of time.
There is no specific timeframe as it would depend on the number of piranhas and the size of the prey. In general, if a group of piranhas were attacking a person, it could happen relatively quickly due to their sharp teeth and aggressive feeding behavior.
piranhas eat aquatic plants.
Large group of piranhas can hunt otters and eat them.
Yes. A school of piranhas can eat a dog.
It'll take one cow nine days.
No because of how vicious piranhas are they will try to eat young
Groups of adult piranhas eat geese and herons.
piranhas eat humans beacause theyare attracted to blood
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no
there not blood thirst visous things like they are made out to be they are like scanvers they eat almost anyhring