You get sick less
We know humankind hates bacteria. We have all watched the commercials with every kind of disinfectant for every part of your house, or even for your body. Also, we all know someone who carries a bottle of hand disinfectant everywhere. However, it appears that the more bacteria we are exposed to, the less sicknesses we get. And dogs are full of them! If you keep a dog in your house, it means that more bacteria enters our home, this way, our microbiome learns how to defend to more diverse types of bacteria, which leads to our body being more prepared.