Boss pets
Boss pets are pets that resemble miniature boss monsters. There are two broad types of boss pets – those unlocked by specific drop by the boss in question, and those unlocked by other means.
Unlocking all boss pets is one of the requirements for the Insane Final Boss title.
Contents
Mechanics[edit  edit source]
The mechanics for the drop chance of the unlock item of boss pets released on 5 January 2015 is as follows:^{[1]}
 Each boss has a base drop chance of the item, represented as . For example, General Graardor's decaying tooth has a base drop chance of 1/5000.
 Bosses with a hard mode have a drop chance that is 5 times higher when killed in that mode. For example, the decaying tooth is 1/1000 in hard mode. Bosses with a challenge mode  e.g. bosses in The Heart  have a doubled drop chance in that mode.
 Each boss has an associated threshold, which is a number . For example, General Graardor's threshold is 1000. This number relates to the total kills of the boss recorded in the player's Beasts tab in the Adventures interface.
 With the exception of Tess, the thresholds are all 1/5 of the drop chance's denominator multiplied by the number of pets. For example, the Dagannoth Kings have a drop chance of X/2500. Onefifth of 2500 is 500, but there are 3 pets, so the threshold is 3×500, or 1500.
 This threshold modifier does not apply to Vindicta or the Twin Furies.
 For every recorded kills the player has of the boss, the numerator of the drop chance increases by 1.
 This is rounded down, so having 1999 recorded General Graardor kills is treated the same as 1000 recorded General Graardor kills.
 For bosses with a hard mode, the two kill counts are added together when checking the number of times the threshold has been met. Normal mode and hard mode kills are weighted equally; i.e. 1 hard mode kill has the same effect on increasing the drop chance as 1 normal mode kill does.
 The numerator is capped at 10, so the drop chance will no longer increase once the threshold has been passed 9 times.
 For example, a player with 2464 General Graardor kills and 603 hard mode General Graardor kills has 3067 total kills, so their decaying tooth drop chance numerator is increased by 3, giving a drop chance of 4/5000 (1/1250) in normal mode and 4/1000 (1/250) in hard mode.
 This will cap at 10/XXXX meaning that once you have reached the threshold a total of nine times, then it cannot improve your drop chances anymore.
In a purely mathematical format your chance of receiving a pet on any particular kill is
Where:
 is your normal mode kill count and is your hard mode kill count
 is the denominator of the base drop rate
 is the number of pets available from the boss
 This can be simplified such that () is the threshold value, everytime this value is reached in killcount is (), the chance of receiving a pet:
 This effectively makes each threshold reached change the pet base denominator to be where is up to a maximum of 9 times.
Pets unlocked by drops[edit  edit source]
The majority of these pets were added in the boss pets update on 5 January 2015. They are all unlocked by obtaining a specific item drop from the relevant boss. A serverwide broadcast occurs when a player receives a drop. When the player uses the item, the item is consumed and the pet is unlocked with the message: As you touch the artefact, a familiar face approaches you. Congratulations! You have unlocked the pet: <pet unlocked>.
Pets can be obtained while LootShare is active; however, they are not distributed via LootShare. Boss pets are always given to the player who would have obtained the drop if LootShare was not active.
Each of these pets can be examined (by any player) to display the number of kills their owner has against the corresponding boss. They can also be used to override Summoning familiars from the boss pets section of the pets interface. If used this way, the overridden familiar will show the relevant killcount upon being examined, beneath the normal familiar examine.
Pets unlocked through other methods[edit  edit source]
Boss pet  Boss  Unlock method 

TzRekJad  TzTokJad  Buy from the Soul Wars store for 100 Zeal points and a fire cape, or Stanley Limelight Traders for 1200 thaler and a fire cape. This also requires 99 Slayer and 99 Summoning. 
Mega ducklings  Mega Duck  Bring Mega Duck to the coast of South Feldip Hills; unlock chance of 1 in 20^{[18]} 
Ahrim the Bobbled  Ahrim the Blighted  Craft using 250 malevolent energy and Barrows  Ahrim's set 
Dharok the Bobbled  Dharok the Wretched  Craft using 250 malevolent energy and Barrows  Dharok's set 
Guthan the Bobbled  Guthan the Infested  Craft using 250 malevolent energy and Barrows  Guthan's set 
Karil the Bobbled  Karil the Tainted  Craft using 250 malevolent energy and Barrows  Karil's set 
Torag the Bobbled  Torag the Corrupted  Craft using 250 malevolent energy and Barrows  Torag's set 
Verac the Bobbled  Verac the Defiled  Craft using 250 malevolent energy and Barrows  Verac's set 
Boss pet totals[edit  edit source]
Pet  29 Jan 2015^{[19]}  18 Sep 2015^{[20]}  15 Mar 2016^{[21]}  4 May 2016^{[22]}  16 Aug 2016^{[23]}  25 Apr 2017^{[24]} 

Mallory  114  1294  N/A  N/A  3752  5800 
Barry  241  1881  N/A  N/A  4749  7171 
Ellie  230  2095  N/A  N/A  4207  5440 
Commander Miniana  405  2454  N/A  N/A  5285  6759 
Corporeal Puppy  225  2041  N/A  N/A  5304  7292 
Prime hatchling  296  2392  N/A  N/A  4228  5465 
Rex hatchling  374  2592  N/A  N/A  4694  6132 
Supreme hatchling  327  2382  N/A  N/A  4168  5352 
General Awwdor  1011  5637  N/A  N/A  12700  15730 
Molly  95  1173  N/A  N/A  2485  3315 
Shrimpy  199  1688  N/A  N/A  3225  3520 
Kalphite Grubling  246  1739  N/A  N/A  3199  3639 
Kalphite Grublet  64  836  N/A  N/A  1719  2223 
King Black Dragonling  250  3581  N/A  N/A  7800  10346 
Chick'arra  679  4160  N/A  N/A  8890  12399 
K'ril Tinyroth  652  4851  N/A  N/A  11208  15237 
Legio Primulus  187  1187  N/A  N/A  2248  2790 
Legio Secundulus  201  1192  N/A  N/A  2246  2832 
Legio Tertiolus  171  1175  N/A  N/A  2186  2746 
Legio Quartulus  191  1202  N/A  N/A  2287  2820 
Legio Quintulus  205  1178  N/A  N/A  2185  2732 
Legio Sextulus  177  1171  N/A  N/A  2215  2776 
Mega ducklings  6269  15574  N/A  N/A  19909  23000 
Nexterminator  214  1627  N/A  N/A  3865  5588 
Queen Black Dragonling  515  3877  N/A  N/A  7983  10499 
Vitalis  182^{[25]}  N/A  489  N/A  591  720 
Bombi  N/A  N/A  640  N/A  941  1304 
Krar Jnr  N/A  N/A  1127  N/A  1953  N/A 
Lil' Tuzzy  N/A  N/A  871  N/A  1266  N/A 
Ava  N/A  N/A  N/A  1206  3066  5788 
Nylessa  N/A  N/A  N/A  1239  2974  5746 
Lilwyr  N/A  N/A  N/A  475  1363  3351 
Greg  N/A  N/A  N/A  432  1078  2707 
Vindiddy  N/A  N/A  N/A  1151  4025  10611 
Rawrvek  N/A  N/A  N/A  1104  3673  9716 
Tess  N/A  N/A  N/A  N/A  483  1950 
Reeves  N/A  N/A  N/A  N/A  N/A  362 
Diddyzag  N/A  N/A  N/A  N/A  N/A  2039 
Yakaminu  N/A  N/A  N/A  N/A  N/A  1308 
Ahrim the Bobbled  N/A  N/A  N/A  N/A  N/A  1009 
Dharok the Bobbled  N/A  N/A  N/A  N/A  N/A  1058 
Guthan the Bobbled  N/A  N/A  N/A  N/A  N/A  776 
Karil the Bobbled  N/A  N/A  N/A  N/A  N/A  1393 
Torag the Bobbled  N/A  N/A  N/A  N/A  N/A  802 
Verac the Bobbled  N/A  N/A  N/A  N/A  N/A  859 
TzRekJad  N/A  N/A  N/A  N/A  N/A  4009 
Update history[edit  edit source]
 ninja 1 February 2021 (Update):
 Broadcasts will now display at what XP threshold or kill count a skill or boss pet was obtained.
 patch 3 February 2020 (Update):
 Boss pets will now show the correct player’s killcount when examined.
 patch 29 January 2018 (Update):
 Pet examines now display the full kill count when a boss is prestiged.
 patch 9 May 2016 (Update):
 Boss pet objects are no longer destroyed on death. Instead, they can be reclaimed from Death with a reclaim cost of 8000 coins each.
 patch 4 April 2016 (Update):
 Boss pets from God Wars 2 now have a loot beam.
Trivia[edit  edit source]
 The Queen Black Dragonling and Dagannoth hatchlings were originally not planned to be released with the other pets, due to the Queen Black Dragon being "too big" and the Dagannoth Kings having old animations. Due to player feedback, they were included with the other pets.
 The original concept was to allow players to obtain the pets by either getting the item as a drop, or by gambling reaper points for a random pet. The latter was scrapped later on.
 For a short while after the update, you would get a notification in your chatbox saying "Your favourite bosses can now be obtained as pets, so what are you waiting for? Get out and catch them all!" This is a reference to the Pokémon franchise.
 In the first batch of boss pets, all examine texts were plays on their larger counterparts' examines.
References[edit  edit source]
Pets 
 
Unlock items 
