Lobster: where to get it

Source	Quantity	Chance per roll
'Rum'-pumped crab []	1	10/100
Ancient warrior []	1	1/128
Baby impling []	1	1/100
Baby impling jar []	1	1/100
Barrel (Viyeldi caves) [{'content': '4-10 different notes or stone spirits are dropped at once.', 'name': 'notes'}]	1–3	Rare
Blood reaver []	1	1/128
Blue dragon [{'content': 'Only in free-to-play worlds.'}]	1	3/128
Elite Black Knight []	1–3	7/128
Fire giant []	1	5/128
General malpractitioner []	1	10/100
Gourmet impling []	4	1/100
Gourmet impling jar []	4	1/100
Greater reborn mage []	1	16/100
Greater reborn ranger []	1	16/100
Greater reborn warrior []	1	17/100
Green dragon [{'content': 'Only in free-to-play worlds.'}]	2	3/128
Hamper []	0–9	Common
Ice troll []	6	3/128
Jungle strykewyrm []	1	13/101
Jungle strykewyrm []	2	1/101
Kalphite Guardian []	1	10/128
Lesser demon []	1	10/128
Lesser demon []	1	10/128
Lesser demon []	1	10/128
Lesser reborn mage []	1	16/100
Lesser reborn ranger []	1	16/100
Lesser reborn warrior []	1	15/100
Locust rider []	1	1/128
Monkey knife fighter (Ape Atoll) []	1	Uncommon
Sanguine crawler []	1	10/128
Scarab mage []	1	1/128
Skeletal Wyvern []	3	2/128
Squeal of Fortune/Rewards []	10	Common
TzHaar-Xil []	1	6/111
Undead troll (High level) []	1	3/128
Zamorak warrior []	3	2/50