II. Characteristics
- Facultative Anaerobic Gram Negative Rods
III. Genus: Pasteurella
- Pasteurella multocida
IV. Genus: Haemophilus (coccobacilli)
- Haemophilus Influenzae
- Haemophilus aegyptius
- Haemophilus ducreyi
V. Genus: Actinobacillus
- Actinobacillus actinomycetemcomitans