By Manish Choudhary
Cape buffalo are unpredictable and attack if they feel threatened.
Box jellyfish have venomous tentacles that can cause severe pain or death.
Saltwater crocodiles are territorial and will attack intruders.
African elephants can be very aggressive, especially to protect their young.
Hippos are very aggressive and attack boats and people who get too close.
These crocodiles are aggressive and attack humans and animals in their space.
Pufferfish can be aggressive, and their toxin is deadly.
Bull sharks are aggressive and often swim in shallow waters where people are.