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Any dog can bite, even a sweet family pet
A dog’s tendency to bite depends on such factors as heredity, socialization, health, and the victim’s behavior. Under the right circumstances any dog, even a sweet family pet, can bite.


photo: State Farm
https://www.flickr.com/photos/statefarm/8736140828

Daily Mail








http://www.dailymail.co.uk/news/article-2374571/My-legs-black-arm-looked-mummified-Mother-loses-THREE-LIMBS-bitten-pet-Shih-Tzu-Buster.html

dog bite



Author Nicor

https://commons.wikimedia.org/wiki/File:Dog_bite.JPG

Capnocytophaga canimorsus

  • General information


    • Taxonomy
      Family: Flavobacteriaceae, genus: C. canimorsus, C. cynodegmi

      Natural habitats
      It is a commensal bacteria in the normal gingival flora of canine and feline species.
      Transmission may occur through bites, licks or even close proximity with animals.

      Clinical significance
      A wound infection (dog bite) with these bacteria may cause serious local problems.

      Moreover, there is a high probability of a running fulminant sepsis, in wich multi-organ failure (MOF) may occur.

  • Gram stain

    • Gram negative rods

      Cells are mainly fusiform, medium to long, with tapered ends

      Size: usually 1-3 µm in length.

      Wet mount slide
      Cultures that are in the log phase one sees a "sliding / floating" movement.

  • Culture characteristics

    • Facultative anaerobic

      5% CO2 improves the growth

      BA:
      After 24 hours, colonies may be up to 1 mm in diameter.
      After 48-72 hours, colonies are small, sphere, shiny and smooth, with spreading edges and not hemolytic.

      Colonies may appear to be purple, pink, or yellow, but once they are scraped from the agar plate they are always yellow in appearance.

      Gliding motility is seen in the growth of the colony
      (the edge spurs as a fringe).
      This is not always present

      BACTEC
      Is not always able to detect the Capnocytophaga

      McConkey: no growth

      BBAØ: growth

  • Characteristics

  • References

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