Most animals are intimately associated with microbes. Microbes live in their guts, in their mouths, and on their skin. Microbes are important for the good health of most animals. Because many animals have more microbe cells living in or on them than they have animal cells, it is as if animals evolved as homes for microbes.
Animals provide microbes with food and shelter. You could say that animals throw a continuous party for microbes. That is why animals are called “hosts” to microbes. Often when people think about microbes and animals, they think of disease. However, most microbes do animals more good than harm. Since we can’t see them when they are being good, we only notice when microbes go bad and cause disease. Here is your chance to see how microbes assist us and other animals.