When you see a mouse scurrying across your kitchen floor, you might shout in fear. But the element of surprise is not what makes these animals more dangerous than you think. These critters won’t gnaw your eyes out or bite your hand off, but they can spread several diseases, either through direct contact or indirect transmission. If you see a mouse in your house, it’s recommended you get rid of it. They can carry diseases including monkeypox, rat-bite fever, and Lassa fever (via Best Life Online).