Name:  Rattasaurus
Type: Hostile
HP:  24
Attack: 8 
Abilities:  None
Spawns:  Curselands and Strange Biome
Drops: None
Note: They hunt animals
Name:  Uneasy Dweller
Type: Hostile
HP:  24
Attack: 8 
Abilities:  Ignites targets on fire
Spawns:  Curselands and Chaotic Caves
Drops: Jack o Lanterns
Note: They attack in groups
Name:  Plantite
Type: Hostile
HP:  18
Attack: 6 
Abilities:  None
Spawns:  Eerie Pit and Strange biomes
Drops: Ferns
Note: They attack in groups
Name:  Metal Slime
Type: Hostile
HP:  4
Attack: 6 
Abilities: Very resistant and Has a chance of fleeing
Spawns:  Curselands, Frost Dimensions and Eerie pits
Drops: None but tons of XP
Note: Hitting these will deal only 1 damage