Iosaur

This creature is a Hunter mob that can only be damaged when the player reaches Hunter level 52.

Iosaur
Health	120 (×60)
Size	Width: 1.0 blocks Height: 1.75 blocks
Damage	6 (×3)
Environment	Precasian Underground Dens
Hostility	Aggressive
Version	1.0
Item (Quantity)		Rate
Copper Coin (5-13)		100%
Precasian Tokens (1-3)		50%
Rejuvenation Staff		3.03%
Precasian Upgrade Kit		0.5%

The Iosaur is an aggressive melee mob that spawns in Precasian Underground Dens. It is a hunter mob that can only be damaged if the player is level 52 or higher, and grants 200 hunter experience points when killed. It regenerates health very rapidly (about 30 (×15) health per second), and also has high knockback as well as knockback immunity. This mob applies Slowness to the player on hit, which lasts for 2.5 seconds.

Trivia

• It slightly resembles the Moschops, a prehistoric animal which wasn't an actual dinosaur.
• It strongly resembles the Spinoledon.

Mobs   Abyss Apparition Bloodsucker Distorter Fade Fiend Flesh Eater Jawe Mega Guardian Occulent Slimer Web Reaper   Ancient Cavern Automaton Bloodsucker Flower Face Rock Critter   Barathos Arkback Eilosapien Emperor Beast Mega Guardian Nospike Ramradon Tharafly Torano Underground Cryptid Echodar Keeler Parasect Squiggler   Candyland Airhead Candy Corny Cane Bug Cherry Blaster Barrager Gingerbird Gingerbread Man Lollypopper Peppermint Slug Spearmint Slug   Celeve Bobo Chocko Jumbo Koko Kranky Snappy Sticky Stitches Tipsy   Creeponia Creep Cow Creeper Creepird King Creeper Winged Creeper Underground Bone Creeper Cave Creepoid Creeperlock Creepuple Magical Creeper   Crystevia Construct of Flight Construct of Mind Construct of Range Construct of Resistance Construct of Speed Construct of Strength Construct of Terror   Deeplands Arocknid Case Construct Cave Creep Doubler Dweller Nipper Rockbiter Rock Crawler Rock Critter   Dustopia Arkzyne Basilisk Crusilisk Devourer Dusteiva Duston Dust Strider Lost Soul Lurker Merkyre Stalker Prime   Everland Blockat Blockhead Blocky Bloger Elderon Eydock Floater Floatator Stepper   Gardencia Archvine Broccohead Carrotop Corny Daysee Flower Face Pod Plant Squasher Sunny Vine Wizard   Greckon Centurion Faceless Floater Grillface Hunter Mega Guardian Shifter Silencer Skull Creature Sugar Face Valkyrie   Haven Angelica Automaton Dawnlight Halycon Mega Guardian Orbiter Rainicorn Sceptron Seeker Surveyor Volar Voliant   Immortallis Fenix Ghastus Goldum Goldus Reaver Shavo Skeledon Skelekyte Urioh Urv Visage   Iromine Enforcer Mechachron Mechamaton Mechyon Polytom Quickpocket Voltron   L'Borean Amphibior Angler Coralon Coratee Hydrolisk Hydrolon Mega Guardian Mermage Muncher Neptuno Poseido Sea Viper   Lelyetia Exohead Flye Grobbler Lelyetian Caster Lelyetian Warrior Paravite Rawbone Tracker Trotter Zhinx   Lunalus Baumba Explodot Lunarcher Inmate X Inmate Y Refluct Visular Visulon Zarg Zorp   Mysterium Banshee Eeo Fungback Fungat Fungik Fungock Fungung Mushroom Spider Nightmare Spider Phantom Runic Golem Spirit Guardian Spirit Protector Undead Troll   Overworld Amphibiyte Ancient Golem Black Ursa Bomb Carrier Boneback Bush Baby Charger Desert Hill Sea Snow Swamp King) Chimera Chomper Cyclops Elkanyne Fishix Furlion Goblin Grunt Goalby Hag Horndron Hunch Living Fungi Magicke Muckopede Natura Pincher Polar Ursa Rammerhead Sand Golem Sasquatch Sea Skeleton Sea Spider Sea Troll Skipper Skolle Sphinx Spinux Stinger Tree Spirit Urka Warclops Wickett Yeti Underground Clown Everbeast Faceless Runner Ghost Shade Trickster Void Charger Void Walker Mother Night Bone Creature Brute Bugeye Dicer Ghostine Ancient Headless Hunter Nightfly Night Reaper Demon Events Day Death Hunter Giant Ice Leafy Sand Stone Wood Headless Destroyer Host Reaper Twins Triclops Night Anemia Bloodmist Dark Beast Ghostly Bugeye Charger Cyclops Goblin Night Reaper‎ Sasquatch Irkling Linger Modulo Night Watcher Roloscope Scrubby Skellox Terrestrial Vertebron Walker   Nether Embrake Flamewalker Hellcat Hellspot Infernal Nethengeic Beast Pigotron Skeletal Cowman Wither Wizard   Precasia Diocus Dyrehorn Giant Slug Iosaur Kaiyu Megatherium Opteryx Sabre Tooth Spinoledon Terradon Tortione   Runandor Ariel Bouncer Eye Creature Paladin Rune Templar Runic Guardian Runic Lifeform Runicorn Runicorn Rider Spectral Wizard   Shyrelands Arcbeast Arcflower ArcWizard Arcworm Axiolight Lightwalker Luxocron Omnilight ShyreKnight Shyre Troll Soulscorne Soulvyre Stimulo Stimulosus Sysker   Vox Ponds Alarmo Centinel Destructor Exoid Fischer Gadgetoid Grocculate Nightwing Toxxulous