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Bite Forces and Teeth


An in-depth biometric study evaluated over 130 skulls—of varying breeds and ages—to establish chewing patterns for each of the three major skull types.

Skulland jaw dimensions were recorded and analyzed to determine:

  • Maximum bite forces
  • The maximum pressure a dog is capable of exerting at each tooth
  • Gape capacities, or the vertical distance between teeth with the mouth open


  • What we learned:

  • Maximum gape and bite force generally increase with weight, but both vary depending on skull shape—even among the same weight class
  • Bite force is strongest towards the back of the mouth


  • How we applied this new insight to the product:

  • We hypothesized that a product that encouraged more of the natural mechanics of each dog’s chewing would cause optimal friction across a wide surface area of each tooth
  • Five chewy new textures and sizes were created to accommodate this action
  • Each size allows teeth to penetrate and gain dental efficacy across a wide surface area
  • Each size accommodates the bite force capabilities of the weakest dog in its weight range
  • All new Greenies™ dental chews are designed to encourage chewing from the middle to the back of the mouth


  • It’s this study that took dental chews beyond simply small, medium and large. And it’s the reason new Greenies™ dental chews offer your patients a chewy, nutritious daily oral care solution today.

    Patent is currently pending for the application of biometrics to the design of a dental chew.



    Click on the links below for more information and supporting data:

    The different skull types of dogs

    How size affects swallowing and digestion

    For more information on our research or formulation, contact us.






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