Where to Farm Large Slimy Bone

The best place to farm Large Slimy Bone is Un'Goro Crater, where Muculent Ooze (level 48-50) drops it at 44.6%. That is the vanilla 1.12 chance, not yet confirmed in Forever. 42 sources are ranked below by drop chance.

Best zones:

The 15 zones with the best source; every source is listed below.

Zone	Sources	Best source	Level	Drop%
Unknown zone	6	Gargantuan Ooze	50-51	50.3%
Gnomeregan	2	Irradiated Slime	27-28+	45.4%
Un'Goro Crater	3	Muculent Ooze	48-50	44.6%
Razorfen Kraul	1	Blood of Agamaggan	27+	44.0%
Felwood	4	Vile Ooze	53	42.8%
The Hinterlands	5	Jade Ooze	47-48	42.8%
Maraudon	2	Creeping Sludge	45-46+	41.9%
Azshara	1	Forest Ooze	52-53	38.2%
Eastern Plaguelands	2	Rotting Sludge	54-55	32.7%
Western Plaguelands	3	Devouring Ooze	55-56	30.6%
Swamp of Sorrows	1	Fungal Ooze	45-46+	23.4%
Ashenvale	1	Rotting Slime	20-22	21.6%
The Temple of Atal'Hakkar	1	Saturated Ooze	47-48+	20.7%
Wailing Caverns	1	Evolving Ectoplasm	17-18+	20.7%
The Barrens	2	Devouring Ectoplasm	16-17+	18.0%

All sources, by drop chance:

Vanilla reference — from the 1.12 world data, not yet confirmed in Forever.

Source	Level	Zone	Spawns	Side	How	Drop%	Map
Gargantuan Ooze	50-51		0		Drop	50.3%	map
Irradiated Slime(elite)	27-28+	Gnomeregan	8		Drop	45.4%	map
Cloned Ooze	50-52		0		Drop	44.7%	map
Muculent Ooze	48-50	Un'Goro Crater	12		Drop	44.6%	map
Blood of Agamaggan(elite)	27+	Razorfen Kraul	4		Drop	44.0%	map
Primal Ooze	50-52	Un'Goro Crater	27		Drop	43.7%	map
Glutinous Ooze	52-54	Un'Goro Crater	43		Drop	43.5%	map
Corrosive Lurker(elite)	28-29+	Gnomeregan	5		Drop	43.4%	map
Vile Ooze	53	Felwood	9		Drop	42.8%	map
Jade Ooze	47-48	The Hinterlands	45		Drop	42.8%	map
Green Sludge	46-47	The Hinterlands	47		Drop	42.6%	map
Creeping Sludge(elite)	45-46+	Maraudon	24		Drop	41.9%	map
Noxious Slime(elite)	46-47+	Maraudon	27		Drop	39.4%	map
Forest Ooze	52-53	Azshara	14		Drop	38.2%	map
Jade Sludge(elite)	47-48+	The Hinterlands	11		Drop	37.4%	map
Emerald Ooze(elite)	46-47+	The Hinterlands	5		Drop	33.4%	map
Rotting Sludge	54-55	Eastern Plaguelands	10		Drop	32.7%	map
Living Decay	55-56	Eastern Plaguelands	22		Drop	31.7%	map
Devouring Ooze	55-56	Western Plaguelands	26		Drop	30.6%	map
Vile Slime	54-55	Western Plaguelands	13		Drop	30.4%	map
Nightmare Ectoplasm	20-21		0		Drop	27.4%	map
Large Vile Slime	56-57	Western Plaguelands	1		Drop	24.0%	map
Fungal Ooze(elite)	45-46+	Swamp of Sorrows	2		Drop	23.4%	map
Rotting Slime	20-22	Ashenvale	41		Drop	21.6%	map
Saturated Ooze(elite)	47-48+	The Temple of Atal'Hakkar	10		Drop	20.7%	map
Evolving Ectoplasm(elite)	17-18+	Wailing Caverns	13		Drop	20.7%	map
Evolving Ectoplasm (Black)(elite)	17-18+		0		Drop	20.7%	map
Evolving Ectoplasm (Green)(elite)	17-18+		0		Drop	20.7%	map
Evolving Ectoplasm (Red)(elite)	17-18+		0		Drop	20.7%	map
The Reak(rare)	49	The Hinterlands	2		Drop	19.7%	map
The Ongar(rare)	51	Felwood	1		Drop	19.6%	map
Devouring Ectoplasm(elite)	16-17+	The Barrens	10		Drop	18.0%	map
Monstrous Ooze	25-26	Wetlands	18		Drop	15.0%	map
Cursed Ooze	49-50	Felwood	24		Drop	15.0%	map
Corrosive Sap Beast	24-25	Stonetalon Mountains	6		Drop	14.4%	map
Sap Beast	22-23	Stonetalon Mountains	19		Drop	11.9%	map
Sludginn(rare)	30	Wetlands	1		Drop	10.5%	map
Tainted Ooze	51-52	Felwood	34		Drop	10.0%	map
Crimson Ooze	24-25	Wetlands	8		Drop	10.0%	map
Black Slime	20-21	Wetlands	24		Drop	9.9%	map
Black Ooze	23-24	Wetlands	36		Drop	9.5%	map
Sludge Beast(rare)	19	The Barrens	1		Drop	7.0%	map

Drop% is the rate recorded in Forever once a source has been looted ten times; a greyed figure is the vanilla 1.12 chance from the world data (vanilla reference — from the 1.12 world data, not yet confirmed in forever). Spawns counts the source's spawn points in the world data. "Side" names which side can kill the NPC when the other finds it friendly. The lead picks the best chance among sources that are not a rare spawn and have at least three spawn points.