Monster

Monsters are hostile Mobs that can be found throughout the game. Most monsters will attack the player on sight. Monsters tend to drop Items useful to the player, and thus, even though it is possibly dangerous, the player will most likely want to seek out these creatures. Some are stronger than others, they are boss monsters.

Notice that all monsters will drain a player's sanity when they are standing nearby a player.

Tips
One can expect to defeat a small spider nest on day one, if they manage to research and craft a spear, while one generally shouldn't attempt fighting a Tentacle early on until the player is prepared, as it can kill the player in two swipes without armor.

When fighting the Deerclops its highly recommended to bring more then one log suit as he will destroy it with 5 hits, he will also not stop pursuing you if he is attacked so dont attack him untill you are ready.