Enterococcus is a genus of bacteria commonly found in the intestines of humans and animals. They are typically harmless and play a role in digestion, but some species can cause infections, particularly in people with weakened immune systems. These bacteria are known for their resilience, surviving in harsh environments, including high salt concentrations and extreme temperatures. Infections caused by Enterococcus can occur in various parts of the body, such as the urinary tract, bloodstream, and wounds, making them a concern in healthcare settings.