Crabs, clawed and armored. The smaller are relatively weak - Blood Crabs however, can pose a major threat.

Crustaceans

Name	Exp	HP	Loot
Blood Crab	160	290	0-20× Gold Coin (common) Fish (uncommon) Chain Armor (semi-rare) Brass Legs (semi-rare) Bloody Pincers (semi-rare) White Pearl (rare)
Crab	30	55	0-10× Gold Coin (common) Fish (uncommon) Crab Pincers (uncommon)
Crustacea Gigantica	1,800	1,600	0-175× Gold Coin (common) Strong Health Potion (semi-rare) Strong Mana Potion (semi-rare) Ring of Healing (semi-rare) 0-2× Giant Crab Pincer (semi-rare) Great Mana Potion (rare)
Deepsea Blood Crab	180	320	0-20× Gold Coin (common) Fish (uncommon) Bloody Pincers (uncommon) Chain Armor (semi-rare) Brass Legs (semi-rare) White Pearl (rare)
Yielothax	1,250	1,500	0-227× Gold Coin (common) Strong Health Potion (uncommon) Strong Mana Potion (uncommon) 0-3× Brown Mushroom (uncommon) 0-5× Small Diamond (semi-rare) Might Ring (semi-rare) Lightning Pendant (rare) Lightning Legs (rare) Talon (rare) Wand of Cosmic Energy (rare) Epee (rare) Mastermind Potion (rare) Shockwave Amulet (rare) Broken Ring of Ending (very rare) Yielocks (very rare) Yielowax (very rare)

   

Creature Types of Tibia
Amphibians	Deeplings Frogs Quara Salamanders
Demons	Arak Demons Archdemons Asuri Demons Demon Lords Dreamhaunters Hands Inferniarchs Imps Pit Demons Possessed Objects Ruthless 7 Ruthless 7 Minions Triangle of Terror
Elementals	Bio- Blobs Cryo- Electro- Elemental Lords Geo- Hydro- Magma- Pyro-
Humanoids	Astral Shapers Chakoyas Corym Djinn Dwarves Dworcs Elves Fae Fungi Giants Gnomes Goblins Minotaurs Orclopses Orcs Trolls Mitmah
Humans	Amazons Barbarians Fafnar Cultists Outlaws Lycanthropes Monks Necromancers Pirates Sorcerers Voodoo Cultists
Invertebrates	Annelids Arachnids Bonelords Cnidarians Crustaceans Hive Born Insects Mollusks Myriapods
Mammals	Apes Bats Bears Canines Felines Glires Hyaenids Mustelids Mutated Mammals Ungulates
Reptiles	Crocodilians Dragons Draken Hydras Lizards Serpents Tortoises Varanidae Wyrms Wyverns
The Undead	Ghosts Pharaohs Skeletons Undead Humanoids Vampires
Misc	Birds Machines Fishes Anuma
Special	Arena Bosses Bosses Deprecated Event Shapeshifters Traps