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Terror dogs are found at the end of Tarn's Lair. They can be killed at level 40 Slayer.
During The Lair of Tarn Razorlor, four of these need to be fought alongside some animated armour and Tarn Razorlor. They rarely use their magic attack, only using it when out of melee range, and it is very weak and inaccurate. After Tarn Razorlor has been slain, their mass melee rush in a multi-combat, prayer-draining area can create problems for the unprepared.
Terror dogs do not count toward fulfilling a Slayer task for dogs; they are a separate task.
Their drops are also very similar to the drops of green dragons. They are the only monsters that drop Granite helmet.
Location
Terror dogs can be an annoying Slayer task, as getting there will take a long time and will be very dangerous. It is recommended you skip these tasks if possible.
The dogs can be found at:
Strategy
Players can hide in Tarn's room just north of the Terror dogs and wait for them to develop tolerance to the player. This makes combating them significantly less risky. Be sure to log out to check for tolerance, as any dogs aggressive towards the player will remain so until the player exits Tarn's room, even if all other dogs are no longer aggressive. This will also cause all dogs targeting the player to stop and begin wandering around. Players can check to see if the dogs are still aggressive by exiting Tarn's room and waiting at the door for a quick retreat if they are.
Terror dogs are similar to hellhounds in that they can hit hard and accurately, but have very low Defence. Unlike hellhounds, terror dogs attack in swarms.
Fighting terror dogs (mostly done for Slayer tasks) can be a difficult and annoying task for the unprepared. With the proper equipment, this task becomes a cake-walk. High-level players with healing equipment can fight them indefinitely. They can be safespotted if standing in the recesses after they have became tolerant of players. They can also be safespotted by luring one to the entrance of the tunnel to Tarn's room, and ranging it directly from the other side of the tunnel.
Getting there
Teleporting with the slayer ring is ideal, otherwise the player will have to reach the terror dogs by traveling through Tarn's Lair. You might want to wear dragonhide armour or bring prayer potions if you are under 37 Prayer, as the skeleton mages' magic attacks can hit hard on metal armour without Protect from Magic up. If you opt for dragonhide, remember that terror dogs are melee creatures. Before entering the room, make sure to change into better melee armour.
Challenges
Tarn's Lair quickly drains prayer at a rate of 1 point per two game ticks, or 50 points per minute (much faster than the Barrows), so it is best not to plan on using prayer.
Although they are in a multi-combat area, the dwarf multicannon cannot be used here.
Finally, as noted above, terror dogs will multi-attack players, subjecting them to constant and accurate melee attacks from several sides at once. Finally, note that terror dogs can hit frequently and hard, so players should pay particular attention to their Hitpoints when fighting them. For example, even when using Guthan's set, a series of terror dog hits can sometimes cause damage much faster than the equipment can heal the player. An emergency teleport is recommended if players experience difficulty staying above half their Hitpoints.
Drops
100%
Weapons/Armour
Item Quantity Rarity GE market price 
Steel battleaxe 1 Common 164
Steel platelegs 1 Common 374
Mithril axe 1 Common 75
Mithril spear 1 Common 272
Mithril kiteshield 1 Uncommon 1,044
Adamant full helm 1 Uncommon 1,816
Rune dagger 1 Uncommon 4,391
Granite helm 1 Rare 29,003
Runes
Item Quantity Rarity GE market price
Water rune 75 Common 300
Fire rune 37 Common 185
Nature rune 15 Uncommon 3,255
Law rune 3 Uncommon 498
Herbs
Item Quantity Rarity GE market price
Grimy guam leaf 1 Common 15
Grimy marrentill 1 Common 13
tarromin 1 Common 153
Grimy harralander 1 Uncommon 674
Grimy ranarr weed 1 Uncommon 7,640
Grimy irit leaf 1 Uncommon 775
Grimy avantoe 1 Uncommon 1,814
Grimy kwuarm 1 Rare 1,165
Grimy cadantine 1 Rare 1,312
Grimy lantadyme 1 Rare 1,391
Grimy dwarf weed 1 Very rare 448
Other
Item Quantity Rarity GE market price
Coins 44–440 Common Not sold
Adamantite ore 1 Common 1,050
Bass 1 Common 200
Clue scroll (hard) 1 Uncommon Not sold
Long bone 1 Rare (1/400)[1] Not sold
Curved bone 1 Very rare (1/5,000)[1] Not sold
Rare drop table
In addition to the drops above, this monster also has access to the rare drop table.
Show/hide rare drop table Item Quantity Rarity GE market price
Coins 3,000 Common Not sold
Loop half of key 1 Common 10,307
Tooth half of key 1 Common 10,840
Chaos talisman 1 Common 505
Uncut sapphire 1 Common 455
Uncut emerald 1 Uncommon 679
Uncut ruby 1 Uncommon 1,249
Nature talisman 1 Uncommon 744
Steel arrow 150 Uncommon 4,800
Rune arrow 42 Uncommon 2,940
Rune javelin 5 Uncommon 875
Adamant javelin 20 Uncommon 1,220
Runite bar 1 Uncommon 12,368
Nature rune 67 Uncommon 14,539
Law rune 45 Uncommon 7,470
Death rune 45 Uncommon 9,135
Rune battleaxe 1 Uncommon 24,487
Rune 2h sword 1 Uncommon 37,758
Rune sq shield 1 Uncommon 22,459
Silver ore 100 (noted) Uncommon 7,000
Dragonstone 1 Uncommon 11,932
Uncut diamond 1 Rare 2,627
Dragon med helm 1 Rare 58,488
Rune kiteshield 1 Rare 32,015
Rune spear 1 Rare 11,933
Shield left half 1 Rare 65,697
Dragon spear 1 Rare 37,226
