Soulshape

Compiling all the known Soulshapes, since no one is updating their comment. Here's a list of the all available Soulshapes and how to get them, if we know how. There are a bunch of new ones in 9.1.5, and I will update this as we know them.

Crittershapes are separated underneath the regular Soulshapes with a line.

Campaign:

• [item=182172] (Unicorn)
• - Finish Chapter 5 of the Night Fae Campaign
  
• [item=182165] (Moth)
• - Finish Chapter 9 of the Night Fae Campaign
  
• [item=182171] (Hippogryph)
• - Finish Campaign Quest The Power of Elune, part of Chapter 6 of the Chains of Domination questline.
  
  Queen's Conservatory:
  
  
• [item=181313] (Dragon Turtle)
• - Random Reward from Restoring [item=177699] or [item=177700] with [item=176832] x1 or more as the Catalyst.
  
• [item=181314] (Toad)
• - Random Reward from [item=177699] or [item=177700] with [item=176832] x1 or more as the Catalyst.
  
  Note: It's possible to obtain one or both of these soulshapes from the Legendary Spirit when upgrading to Rank 2/3/4 Queen's Conservatory, without any catalyst. It is random though.
  
  Purchased from Vendor:
  
  
• [item=182181] (Tiger)
• - Sold by [npc=174766]. Requires Friendly with [npc=167455]. Costs 1500 Anima.
  
• [item=182166] (Bear)
• - Sold by [npc=174766]. Requires Friendly with [npc=167455]. Costs 1500 Anima.
  
• [item=182168] (Crane)
• - Sold by [npc=158556] or [npc=176065]. Requires Honored with the Wild Hunt. Costs 1500 Anima.
  
• [item=182174] (Lion)
• - Sold by [npc=162447]. Requires Friendly with Court of Night. Costs 1500 Anima.
  
• [item=182182] (Wolf)
• - Sold by [npc=162447]. Requires Friendly with Court of Night. Costs 1500 Anima.
  
• [item=187881] (Ram)
• - Sold by [npc=162447]. Requires ? with Court of Night. Costs 25000 Anima and 50 [currency=1885].
  
• [item=182175] (Moose)
• - Sold by [npc=163714]. Requires defeating 5 unique Star Lake Amphitheater daily rares. Costs 1500 Anima.
  
• [item=187901] (Eagle)
• - Sold by [npc=163714]. Requires defeating ? unique Star Lake Amphitheater daily rares. Costs 20000 Anima.
  
• [item=189980] (Brutosaur)
• - Bought from [npc=183962] for 1000 [currency=1979]. Must be at level 6 Cypher Research to see.
  
  ---
  
  
• [item=187871] (Cricket)
• - Sold by [npc=162447]. Requires ? with Court of Night. Costs 15000 Anima and 25 [currency=1885].
  
• [item=187873] (Prairie Dog)
• - Sold by [npc=163714]. Requires defeating ? unique Star Lake Amphitheater daily rares. Costs 10000 Anima.
  
• [item=187859] (Rat)
• - Sold by [npc=180161] in Tazavesh the Veiled Market. Requires a lockout with at least the first boss dead. When he whispers you, nod /yes to him to get access to the vendor. Requires 735 Gold, [item=179311] x2 and [item=186161] x2.
  
• [item=189986] (Armadillo)
• - Bought from [npc=183962] for 1000 [currency=1979]. Must be at level 6 Cypher Research to see.
  
  Rare Spawn Drops: (None are 100%)
  
  
• [item=182179] (Runestag)
• - Drops from [npc=164547].
  
• [item=182183] (Wolfhawk)
• - Drops from [npc=164415].
  
• [item=182176] (Nightsaber)
• - Drops from [npc=168647].
  
• [item=189972] (Scorpid)
• - Dropped by [npc=184413].
  
  Dungeon/Raid Drops: (None are 100%)
  
  
• [item=182178] (Raptor)
• - Drop from [npc=169769] in [zone=13309].
  
• [item=182185] (Teroclaw)
• - Drops from [npc=164501] in [zone=13334].
  
• [item=182169] (Feathered Drake)
• - Drops from [npc=167406] in [zone=13224] on HEROIC or higher.
  
• [item=182173] (Hyena)
• - Random Drop from Mythic+ Dungeons.
  
• [item=185051] (Direhorn)
• - Drops from [npc=176556] in [zone=13577].
  
• [item=185047] (Yak)
• - Drops from [npc=180863] in [zone=13577] HARD MODE.
  
• [item=182177] (Owlcat)
• - Drops from Sylvanas Windrunner in [zone=13561] on HEROIC or higher.
  
• [item=187905] (Boar)
• - Drops from Warlords of Draenor Timewalking Bosses.
  
• [item=185053] (Kodo)
• - Drops from Cataclysm Timewalking Bosses.
  
• [item=187906] (Owl)
• - Drops from Legion Timewalking Bosses.
  
• [item=187904] (Cloud Serpent)
• - Drops from Mists of Pandaria Timewalking Bosses.
  
• [item=187903] (Worm)
• - Drops from Wrath of the Lich King Timewalking Bosses.
  
• [item=187902] (Sporebat)
• - Drops from Burning Crusade Timewalking Bosses.
  
• [item=190337] (Cervid)
• - Drops from [npc=181548] in [zone=13742] on HEROIC.
  
• [item=189982] (Silithid)
• - Drops from The Jailer in [zone=13742]. (Possibly Heroic or Higher Only?)
  
  ---
  
  
• [item=189991] (Snail)
• - Looted from [object=375893] in [zone=13742]. See Cache's page for information on how to unlock it. (NORMAL or Higher Only)
  
  PvP:
  
  
• [item=182170] (Gryphon)
• - Random drop from Rated PvP. (VERY Low Drop chance in Unrated PvP)
  
• [item=182184] (Wyvern)
• - Random drop from Unrated PvP. (VERY Low Drop chance in Rated PvP).
  
• [item=182167] (Cobra)
• - Random drop from Arena Matches.
  
• [item=185048] (Shoveltusk)
• - Random drop from PvP Brawls.
  
  Holiday:
  
• [item=189705] (Turkey)
• - Obtained from [event=404]. Sit at the tables outside the capital cities and eat all 5 types of food to receive the [spell=61849] buff. After this, every time you eat more food and leave a chair with the buff, you have a chance to obtain it. ONLY available during Pilgrim's Bounty.
  
  Torghast:
  
  
• [item=185049] (Saurolisk)
• - Random drop from Adamant Vaults in Torghast.
  
• [item=189971] (Dragonhawk)
• - Spawns as an interactable Lost Soul randomly in Torghast.
  
• [item=189977] (Bat)
• - Spawns as an interactable Lost Soul randomly in Torghast.
  
• [item=189976] (Tallstrider)
• - Spawns as an interactable Lost Soul randomly in Torghast.
  
• [item=189975] (Elekk)
• - Spawns as an interactable Lost Soul randomly in Torghast.
  
  ---
  
  
• [item=187876] (Baby Saurolisk)
• - Random drop from Adamant Vaults in Torghast.
  
• [item=189987] (Baby Pig)
• - Spawns as an interactable Lost Soul randomly in Torghast.
  
  Miscellaneous:
  
  
• [item=185050] (Spider)
• - Random drop from [object=369439] in Korthia.
  
• [item=185052] (Hippo)
• - Random drop from [item=185991] after a Night Fae Assault in the Maw.
  
• [item=182180] (Stag)
• - Random drop from Night Fae dailies in Korthia.
  
• [item=187882] (Alpaca)
• - Random drop from Shadowlands World Bosses.
  
• [item=185054] (Mammoth)
• - Random Drop from [item=180649] (Ardenweald Paragon Chest).
  
• [item=187880] (Goat)
• - Random Drop from Calling Boxes.
  
• [item=189973] (Mana Ray)
• - Random drop from [item=187780] (Zereth Mortis Paragon Chest).
  
  ---
  
  
• [item=187819] (Kitty Cat)
• - Use /soothe on the [npc=181694] on top of the Great Trees of Ardenweald. One will be up at a time, and move to a new tree when someone obtained the Crittershape. Check Cat Soul Page for possible spawn points.
  
• [item=187877] (Frog)
• - Random from Fishing in Shadowlands Zones.
  
• [item=187870] (Porcupine)
• - Random Drop from [item=180649] (Ardenweald Paragon Chest).
  
• [item=187862] (Snake)
• - Random Drop from Calling Boxes.
  
• [item=187813] (Chicken)
• - Gather the [item=187811], located at 63.75, 61.69 in Revendreth. This has roughly a 60 minute respawn, and will despawn after 10 minutes, or after too many players interact with it. After, head to the Lost Soul located at 63.18, 42.76 in Revendreth. Use /chicken on the soul, then use the Spectral Feed from your Bag. The Chicken will only give the Soul to 3 players before despawning.
  
• [item=187878] (Saurid)
• - Use /bow on the [npc=182105] at 44.84, 67.89 in Maldraxxus. (Cave Entrance is 44.59, 65.48)
  
• [item=187818] (Otter)
• - Use /hug on the [npc=181682] at 49.85, 46.85 in Bastion. Has roughly a 60 minute respawn, and will despawn after 5 minutes, or after too many players interact with it.
  
• [item=187858] (Rabbit)
• - Random Drop from Pet Battle World Quests in the Shadowlands. Will show as reward on the map when available.
  
• [item=189990] (Bee)
• - Interact with the [object=375516] at 63.3 60.6 in Zereth Mortis.
  
• [item=189988] (Sheep)
• - Spawns as an interactable NPC at multiple possible locations in Zereth Mortis. Check the Sheep Soul page's comments for possible locations.
  
• [item=189989] (Penguin)
• - Interact with the [npc=185279] at 34.4 71.3 in Zereth Mortis high in the sky on an orb.
  
• [item=189983] (Gromit)
• - Chance to loot from [object=376046]. Requires a piece of "Broker's" Cypher Gear to Allow Pocopoc to see Hidden Caches, as well as having Pocopoc's Treasurefinder buff active.
  
  Special:
  
  
• Corgi Soul
• - Use /pet on [npc=174608] walking around the Covenant Hall. There is NO QUEST for this. Simply talk to Choofa afterwards and you will have the option for Corgi.
  
• Well-Fed Cat
• - Gather the [item=187811], located at 63.75, 61.69 in Revendreth. This has roughly a 60 minute respawn, and will despawn after 10 minutes, or after too many players interact with it. Then return to Heart of the Forest and go down to the Queen's Conservatory Portal. (To the right when you go down the ramp). You will see [npc=182093] sitting on a chair behind the portal. Use /meow while targeting them to hear they are hungry. Use the Spectral Feed on them. Like the Corgi, there is no quest, you will have the option for Well-Fed Cat next time you return to Choofa.

So far I've managed to find the sources for:
I will edit as I find more.

• Ursine (bear): Cortinarius vendor
  
• Tiger: Cortinarius vendor
  
• Unicorn: Night Fae campaign (night warriors curse)
  
• Moth: Night Fae campaign (finish)
  
• Shadowstalker (cat): Valfir the Unrelenting drop
  
• Crane: Aithlyn
  
• Lion: Spindlenose
  
• Wolf: Spindlenose
  
• Gulper (frog): Queens Conservatory
  
• Dragon Turtle: Queens Conservatory
• 
  
  - Thanks to Aowen1337 for help expanding list.

22 Soulshapes available to anyone who chooses Night Fae as their covenant. Each form will have a different unlock.

• 
  
• Runestag
• 
  
• Moth
• 
  
• Unicorn
• 
  
• Teroclaw
• 
  
• Crane
• 
  
• Lion
• 
  
• Tiger
• 
  
• Hyena
• 
  
• Cobra
• 
  
• Dragon Turtle
• 
  
• Stag
• 
  
• Owlcat
• 
  
• Nightsaber
• 
  
• Raptor
• 
  
• Bear
• 
  
• Moose
• 
  
• Wolf
• 
  
• Feathered Drake
• 
  
• Wolfhawk
• 
  
• Hippogryph
• 
  
• Gryphon
• 
  
• Wyvern
•