- A wild, turbulent situation in which multiple sharks or other predatory fish attack one or more edible creatures simultaneously, in competition with each other.
- When the terrified, bleeding cow was washed overboard into the river, the hungry piranhas entered a feeding frenzy, turning the water red with blood.
- (idiomatic, by extension) A voracious competition among would-be purchasers, etc. for limited resources.
- The manager hesitated to open the doors to the thronging holiday crowds, knowing that a feeding frenzy would soon ensue near the display of coveted toys.