Which living creatures exert the most powerful bite force for its body size?

To determine an animal’s bite strength, some studies measure force, others measure pressure, and some take into account body mass in proportion to force. To compare bite forces in taxa of greatly differing body masses a bite force quotient (BFQ) is calculated as a regression of the quotient of an animal's bite force divided by its body mass.

The carnivorous mammal with the strongest bite for its body size is the Tasmanian devil (Sarcophilus harrisii) ⬆️. Being only about the size of a big housecat, this marsupial with jaws that can open to an 80-degree angle, can produce a bite force of 553 newtons or about 56 kg of force and a BFQ of 181 (by comparison, the tiger’s BFQ is 127).

Some animals with a huge bite aren't even predators. The Galapagos large ground finch (Geospiza magnirostris) ⬆️ weighs only about 33 grams, but its beak can crack tough nuts and seeds with a force of 70 newtons.

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