Health Bar is a feature in Mope.io. Higher tier animals have a bigger health bar than lower tier animals. It takes 3 bites to kill a Mouse, Chipmunk, but 5 to kill a Hippo, Orca and a Mammoth. The way to lose health is if other players touch you. You can also lose health when you get tailbitten. If your health runs out a message pop up saying: "Oh no! You were eaten!" watch out for red-circled players or watch your dead! Watch out for your health!