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Pasteurella canis

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A gram-negative nonmotile aerobic coccobacillus and facultative nonhaemolytic bacterium involved in hemorrhagic septicemia in animals.


Pasteurella canis composed of two biotypes, biovar 1 originated from canine and biovar 2 from bovine. These two biotypes differentiate in the reactions of indole wherein biovar 1 is indole positive and biovar 2 is indole negative. In culture media it forms grey-colored, round, small and smooth colonies. It can be found in healthy and farm-raised animals including dogs, rabbits, cats, sheep, horses, cattle, deer, ferrets and sea lions

Pasteurella canis is associated with chicken cholera and hemorrhagic septicemia in animals. It is able to metabolize sucrose and glucose in which it is positive in oxidase, catalase and ornithine decarboxylase while negative for lysine decarboxylase, D-mannitol, urease and maltose.

Pasteurella canis can cause zoonotic infections in humans manifested as soft tissue infections after an animal bite, licking over wounds and scratches causes severe infections to immunocompromised individual. It is implicated in various canine infections including external otitis, systemic infections, vertebral osteomyelitis, bacterial rhinitis, meningomyelitis and sinus inflammation.

Scientific Classification:

 Kingdom: Bacteria
 Phylum: Proteobacteria
 Class: Gammaproteobacteria
 Order: Pasteurellales
 Family: Pasteurellaceae
 Genus: Pasteurella
 Species: Pasteurella canis 

See also:

• Bacteria

• Septicemia

• Systemic infections