Final answer:
The organisms most often resulting from animal bites can include several bacteria, but Pseudomonas aeruginosa and Staphylococcus aureus are commonly linked to these infections. Clostridium perfringens, although possibly involved in severe cases, are generally associated with food poisoning and gas gangrene rather than directly from an animal bite. The answer is option D.
Step-by-step explanation:
The organisms that most often result from animal bites can include a variety of bacteria, but the answer choices provided suggest a focus on certain pathogenic bacteria that are associated with such infections. Infectious agents like Pseudomonas aeruginosa and Staphylococcus aureus are commonly linked to wound infections from animal bites.
However, Clostridium perfringens is known for more severe complications like gas gangrene, particularly when deep tissue is infected due to lack of oxygen supply; thus, it can be an outcome of an animal bite but is more commonly associated with food poisoning and gas gangrene as described.
Clostridium tetani, the agent of tetanus, might also be considered in cases of deep puncture wounds, although it is not typically mentioned as a primary pathogen from animal bites unless there is a specific context of necrotic tissue involved. Similarly, Escherichia coli and other organisms such as Staphylococcus epidermidis and Propionibacterium acnes are part of normal flora or associated with other types of infections.