The bite of a dog can yield between 150-450 lb of pressure per square inch, depending on the dog and its training. Therefore, although a dog bite may appear as a laceration or avulsion, it most likely has components of a crush injury. In this type of injury, debridement is required to remove any crushed tissues. Once debrided, the laceration injury is then amenable to suturing and primary closure.
For more on animal bites, read here.
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Cite this: Richard H. Sinert. Fast Five Quiz: Are You Prepared to Confront Animal Bites? - Medscape - Aug 18, 2015.