The exact number of germs, or microorganisms, in a rat can vary widely depending on a number of factors such as the rat's environment, health, and diet. Rats are known to carry various types of bacteria, viruses, fungi, and parasites, many of which are part of their normal microbiota, while others can be pathogenic.
Research suggests that rats can host thousands to millions of bacteria. For example, studies have shown that the gut microbiota of