1. Gram negative rods & coccobacilli 2) Obligate anaerobes 3) Inhabit mouth, GI tract, & genital tract of humans and animals. 4) Bacteroides fragilis = ~ 30% of bacteria in human feces. 5) Responsible for abscesses / septicemia 2^ (secondary to) abdominal surgery.

Bacteroides vulgaris is a gram-negative bacteria. It is common and is a non-endospore forming bacilli and can be either motile or non-motile.

clostridium and bacteroides species

clostridium and bacteroides species

Generally, the gut of mammals