|Release date||5 January 2017 (Update)|
|Immune to poison?||Yes|
|Attack style||Melee, Ranged (small)
Melee, Magic, Ranged (large)'
|Always drops||Big bones, Houndmaster's diary|
|A mutated guardian of Xeric.|
The Muttadiles are bosses encountered in the Chambers of Xeric. It is a dog-like creature that has horribly mutated into a giant crocodilian beast. The original muttadile was pregnant at the time when Xeric transformed it into its current form and as such its offspring was warped too. The two beasts now act as guardians of the chambers.
The two Muttadiles that reside in the chamber are present upon entering; a small one is on the ground and the large one is lurking in the water.
The small muttadile only attacks with both melee and ranged. While this smaller muttadile is alive, the larger one will stay submerged in the water, where it is unattackable and attacks players with magic (which covers the whole chamber).
When the smaller muttadile dies, the larger one emerges from the water and starts attacking the player. Apart from having higher stats and using all three forms of combat, this larger muttadile will also perform a shockwave attack if anyone is within melee range, dealing massive damage to them. It is important to stay away from melee distance of the larger muttadile and utilise safespots to ensure the muttadile will only use magic and ranged on the team.
As the muttadiles' health lowers, they will go to the nearby meat tree and start eating it to replenish health. Players can form a "wall" to block the muttadiles from reaching the tree. Alternatively, players can either cut down the meat tree. Another method is to simply let the muttadile replenish its health, as it stops trying to eat the tree after it has done so several times.
Item Quantity Rarity GE market price Elder (+) 1–10 Varies  Not sold Twisted (+) 1–10 Varies  Not sold Kodai (+) 1–10 Varies  Not sold Revitalisation (+) 1–10 Varies  Not sold Prayer enhance (+) 1–10 Varies  Not sold Xeric's aid (+) 1–10 Varies  Not sold Overload (+) 1–10 Varies  Not sold Long bone 1 Rare (1/400) Not sold Curved bone 1 Very rare (1/5,000) Not sold
- The word 'Muttadile' is a portmanteau of mutt, mutant and crocodile.
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