Creatures in Minecraft can be a really bad, that things can demolish your structures or just kill you. Well, this bad guy will increase a difficulty but still number of this creatures can make a problem to you. Also, with creatures playing this game is much more interesting.
When you move through levels also creatures will have more power and more abilities. Because of that you must build your structures to be safe from Minecraft creatures. All creatures can suffer from climatic damages expect chickens, they are only creature which cant suffer from changes.
Creatures with powers and weapons can demolish your buildings, and there is a lot of variations which you can use to defend and get rid of them. Cow is easiest Minecraft creature and Pigman is your worst enemy. There is also sheep, pig, wolf, chicken, zombie, giant and much more creatures.
Passive creatures will not attack you. Not all creatures are bad guys. You can use wolf as your ally. Zombies and Pimgans is some sort of neutral creatures and they will attack you only if you provoke them. You can see this all creatures in game if you have a Minecraft account and we can provide one for you for free.