Release date 5 January 2017 (Update)
Members? Yes
Combat N/A
Hitpoints Varies
Slayer Not assigned
Aggressive Yes
Poisonous No
Immune to poison? Yes
Attack style Melee, Ranged (small)

Melee, Magic, Ranged (large)'

Attack speed Monster attack speed 5
Max hit Varies
Weakness Unknown (edit)
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.

Fighting Muttadile

A pair of players facing the larger muttadile. Note its shockwave attack hitting one of the players.

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
Big bones Big bones 1 Always 225
Houndmaster's diary Houndmaster's diary 1 Always Not sold
Overload (4) (Chambers of Xeric) Overload (+) 1 Always Not sold
Prayer enhance (4) Prayer enhance (+) 1 Always Not sold
Xeric's aid (4) Xeric's aid (+) 1 Always [1] Not sold
Revitalisation potion (4) Revitalisation (+) 1 Always [1] Not sold
  1. 1.0 1.1 Only dropped by the larger muttadile.


Item Quantity Rarity GE market price
Long bone Long bone 1 Rare (1/400) Not sold
Curved bone Curved bone 1 Very rare (1/5,000) Not sold


  • The word 'Muttadile' is a portmanteau of mutt, mutant and crocodile.
  • The strange bells near the entrance have the examine text "for whom?" which could be a reference to the 1940 novel For whom the bell tolls by Ernest Hemingway.