Lion Jaws : 600 psi
A little shock finding Lion on the lowest rank of 10 most powerful jaws in the world. Different theories come to explain the reason. First, Lion has evolved from solitary predator to social predator. Second , Because Lion tend to hunt in Group and third because lion's is mostly target their target's neck to take them down. lion don't need a powerful jaw to rip this area.
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Tiger's jaw, 9th Most Powerful Jaw in the world