Attention Deficit Disorder Prosthetic Memory Program

Bite Force Quotient

ADDPMP769
Bite Force Quotient - © Attention Deficit Disorder Prosthetic Memory Program

The BFQ was first applied in a 2005 paper comparing bite forces, body masses and prey size in a range of living and extinct mammalian carnivores, later expanded in 2007. The authors predicted bite forces using beam theory, based on the directly proportional relationship between muscle cross-sectional area and the maximal force muscles can generate. Because body mass is proportional to volume, the relationship between bite force and body mass is allometric. All else being equal, it would be expected to follow a 2/3 power rule. Consequently, small species would be expected to bite harder for their size than large species if a simple ratio of bite force to body mass is used, resulting in bias. Applying the BFQ normalises the data allowing for a fair comparison between species of different sizes. In short, if an animal or species has a high BFQ this indicates that it bites hard for its size after controlling for allometry.

Results showed predators that take relatively large prey have large bite forces for their size:

Aardwolf: 77
European badger: 109
Asiatic black bear: 44
American black bear: 64
Brown bear: 78
Domestic cat: 67
Cheetah: 119
Cougar: 108
Coyote: 88
Dhole: 132
Dingo: 69
African wild dog: 142
Domestic dog: 114

Bite Force Quotient - © Attention Deficit Disorder Prosthetic Memory Program
Bite Force Quotient - © Attention Deficit Disorder Prosthetic Memory Program
Bite Force Quotient - © Attention Deficit Disorder Prosthetic Memory Program
Bite Force Quotient - © Attention Deficit Disorder Prosthetic Memory Program
Eugen Sandow - © Attention Deficit Disorder Prosthetic Memory Program
ADDPMP623
Eugen Sandow
Smoke Signal - © Attention Deficit Disorder Prosthetic Memory Program
ADDPMP619
Smoke Signal
Oro by Cizia Zykë - © Attention Deficit Disorder Prosthetic Memory Program
ADDPMP177
Oro by Cizia Zykë
Eunice Aphroditois - © Attention Deficit Disorder Prosthetic Memory Program
ADDPMP518
Eunice Aphroditois
The Iceman - © Attention Deficit Disorder Prosthetic Memory Program
ADDPMP192
The Iceman
Five-Hundred-Meter Aperture Spherical Telescope - © Attention Deficit Disorder Prosthetic Memory Program
ADDPMP434
Five-Hundred-Meter Aperture Spherical Telescope
Rogue Waves - © Attention Deficit Disorder Prosthetic Memory Program
ADDPMP060
Rogue Waves
Maratus Spider - © Attention Deficit Disorder Prosthetic Memory Program
ADDPMP259
Maratus Spider
Animalia Paradoxa - © Attention Deficit Disorder Prosthetic Memory Program
ADDPMP582
Animalia Paradoxa
Grackles Invade Walmart Parking Lot - © Attention Deficit Disorder Prosthetic Memory Program
ADDPMP216
Grackles Invade Walmart Parking Lot
Defense Architecture - © Attention Deficit Disorder Prosthetic Memory Program
ADDPMP590
Defense Architecture
Tidal Bore - © Attention Deficit Disorder Prosthetic Memory Program
ADDPMP528
Tidal Bore

You are using an outdated browser.
Please upgrade your browser to improve your experience.