Familiars by availability
All familiars listed as Readily or Conditionally Available can be obtained by anyone, even those in hardcore ascensions.
Readily Available
These familiars are currently available to everyone, even those in hardcore ascensions, and without the need of any rare items.
Unlimited Availability
You can get as many hatchlings of these from the basic zones as you want without ascending.
Angry Goat
Baby Gravy Fairy
Barrrnacle
Blood-Faced Volleyball
Cocoabo
Ghuol Whelp
Hovering Sombrero
Howling Balloon Monkey
Killer Bee
Leprechaun
Levitating Potato
Misshapen Animal Skeleton
Oily Woim
Sabre-Toothed Lime
Spooky Pirate Skeleton
Stab Bat
Star Starfish
Unlimited Availability (with caveats)
While you can get as many hatchlings of these from the basic zones as you want without ascending, they involve time and/or financial commitments that make doing so a major effort.
Exotic Parrot - 500,000 meat at The Black Market. Can become impossible to obtain for one ascension if you choose to fight the storekeeper in Way of the Surprising Fist.
Jumpsuited Hound Dog - 100 filthy lucre, which will take 100 days of moderate effort to acquire in a single run and is best farmed over many runs.
Gelatinous Cubeling - 27 fat loot tokens. Fat loot tokens are acquired by completing The Daily Dungeon and by completing The GameInformPowerDailyPro Dungeon. Tokens can be acquired over multiple runs.
Familiar Acquired from El Vibrato
Familiars Acquired from the Sea
Limited-Number Familiars
Every player can get these familiars, but the number of hatchlings is limited.
Fuzzy Dice - Only one can be gained from the Shore per ascension.
Mosquito - The hatchling is a quest item.
Origami Towel Crane - Only one towel can be gained per ascension.
Reassembled Blackbird - The hatchling is a quest item. Not available in Bees Hate You.
Ragamuffin Imp - Only one hatchling per player can be ever acquired.
Smiling Rat - Can only be gained if player does not already have one in inventory or terrarium.
Missable Familiar
Grue - Cannot be traded. If missed, the player must re-ascend to get another opportunity to gain this familiar.
Conditionally Available
These familiars are currently available to everyone, even those in hardcore ascensions, but require at least one specific condition to be fulfilled. Sign-dependent familiars require a character to be ascended at least once, because they are dependent on a specific area which only opens to one born under a specific moon sign. The Ninja Snowflake is acquired via Pickpocketing, a skill only available to Disco Bandits, Accordion Thieves and those in bird form (via Look For Shiny Objects). The Hobo Monkey and Slimeling are available only to those in certain clans, as access to Hobopolis or the Slime Tube respectively are needed to attain one. The Mariachi Chihuahua, Autonomous Disco Ball, Animated Macaroni Duck, Pet Cheezling, Adorable Seal Larva and Untamed Turtle are available as a part of the Nemesis quest. The Reconstituted Crow and Hovering Skull can only be obtained in a special challenge path.
The hatchlings of the Clockwork Grapefruit, MagiMechTech MicroMechaMech, Ninja Snowflake, Scary Death Orb, and Whirling Maple Leaf are tradeable items and may be bought in the mall if not in hardcore.
Moon Sign-Dependent
Inside Degrassi Knoll
Little Canadia
Moxie Signs
Skill-Dependent
Clan-Dependent
Clans with Basements
Acquired in the course of the Nemesis quest.
Path-Dependent
Reconstituted Crow - The hatchling is a quest item that replaces the reassembled blackbird.
Hovering Skull - Can only be gained if player does not already have one in inventory or terrarium.
Limited Availability
Available from The Raffle House
Only two of these hatchlings are created per day as long as the raffles continue, making the familiars rare and expensive.
Available on Past Crimbos
Snowy Owl - Acquired by zapping a yo-yo, which could only be made during Crimbo 2005. Later Crimbos have found yo-yos in dusty Crimbo crates. The bindlestocking from Crimbo 2010 drops yo-yos, making this item possibly available indefinitely.
Bulky Buddy Box - Made using Crimborg Toymaking, which was only available during Crimbo 2007. Later Crimbos have found these lurking in sturdy Crimbo crates.
Evil Teddy Bear - Made in Linnea's Monster Truck in Crimbotown Right-About-Now, during Crimbo 2006.
Hanukkimbo Dreidl - Came from a small Crimbo Pressie in 2004.
Pair of Ragged Claws - Built from parts obtained during Crimbo 2008.
Pet Rock - Available both from Uncle Crimbo's Mobile Home and Linnea's Monster Truck in Crimbos 2005 and 2006. Later Crimbos have found these lurking in sturdy Crimbo crates.
RoboGoose - Has a chance of hatching from a Robotronic egg, which first dropped during Crimbo 2007. Because the familiar lays these eggs, the number of RoboGeese in the game should be always increasing.
Snow Angel - New hatchlings could be acquired only during Crimbo 2009.
Teddy Bear - Constructed using Toymaking, which was only available during Crimbo 2005. Later Crimbos have found these lurking in sturdy Crimbo crates.
Teddy Borg - Constructed using Crimborg Toymaking, which was only available during Crimbo 2007. Later Crimbos have found these lurking in sturdy Crimbo crates.
Toothsome Rock - Constructed using Toolmaking during Crimbo 2006. Later Crimbos have found these lurking in sturdy Crimbo crates.
holiday log - Created with the Holiday cheese log, only available for purchase during Crimbo 2010
Tickle-Me Emilio - Purchasable gift item during Crimbo 2011
MiniMechaElf - Gifted to players during Crimbo 2012. The hatchling cannot be traded.
Limited-Time Content
These familiars require one or more items which no longer drop/sell and are only available for purchase in the Mall, but for ever-increasing amounts of Meat due to the fact that as the hatchlings are bought and hatched in-game, fewer and fewer of them remain, increasing in scarcity.
Ghost Pickle on a Stick - Made from drops from The Spectral Pickle Factory, which may or may not ever appear again.
Ninja Pirate Zombie Robot - Requires the zombie pineal gland, which only dropped for a short time during the Gray Plague in the aftermath of White Wednesday.
O.A.F. - Only available from the The Traveling Trader on April Fools' Day 2007.
Pottery Barn Owl - Made from items obtained during the Bigg's Dig event; the unearthed potsherd needed in its creation can no longer be obtained from the game.
Rock Lobster - Made from drops gained during the Unexplained Tremors event; its Live lobster component no longer drops (except from faxed copies) now that the rock monsters have disappeared.
Underworld Bonsai - Available to those who defeated the Underworld Tree and gathered the underworld acorn.
Hippo Ballerina - Available to those who attended KoL Con 7, 8 or 9
Dataspider - Hatches from Squirming egg sac, which were only attainable from Antique database servers during the Server Spiders event (again, much like the Lobster, it is still possible to generate more through A Fax Machine).
Gift Items Gained through Mr. Store Items
The hatchlings for these familiars are gift items. They cannot be sold in the mall, but they can be traded or gift-boxed to another player (or auctioned via kbay), so their availability is limited, even though the number of them in game will always increase.
Jack-in-the-Box - Drops from A Crimbo Tree, which is only available to those who have Clan VIP Lounge key, in a clan whose members constructed the tree from parts sold Crimbo 2009.
Purse Rat - Drops from the Deluxe Mr. Klaw, available only to those who have a Clan VIP Lounge key.
Wind-up Chattering Teeth - Created by the skill Summon Hilarious Objects.
Other
BRICKO chick - Acquired indirectly from the Mr. Store skill Summon BRICKOs. They are difficult to acquire, but can be sold in the mall, and will continually increase in number.
Feral Kobold - Acquired indirectly from the KoL Con skill Summon Dice. They are difficult to acquire, but can be sold in the mall, and will continually increase in number.
Peppermint Rhino - Acquired indirectly from the Mr. Store farm A Peppermint Patch. Can be sold in the mall, and will continually increase in number.
Mini-Skulldozer - Acquired indirectly from the Mr. Store farm A Bone Garden. Can be sold in the mall, and will continually increase in number.
Homemade Robot - Acquired randomly from the home robotics kit, which is made by the skill Summon Geeky Gifts. Can be sold in the mall, and will continually increase in number.
Mr. Store Familiars
These familiars are/were only available for purchase in the Mr. Store for a limited period of time. They are still available in the Mall, but for ever-increasing amounts of Meat due to the fact that these familiars effectively cost money (not Meat) to procure, as well as the fact that, like the "Limited Availability" familiars above, these hatchlings are only available for a limited amount of time, and cannot be unhatched after being used. Only active Mr. Store familiars may be purchased with Mr. Accessories for use in hardcore.
The Leprechaun-Volleyball and Leprechaun-Gravy Fairy hybrid familiars have been always available in the Mr. Store for 2 Mr. Accessories. For the first seven years they were replaced with new, yet identically functioning, versions yearly. As of 2012, the replacements are also Leprechaun-Volleyball and Leprechaun-Gravy Fairy hybrids, but have added functionality. The Leprechaun-Volleyball drops a spleen item, and the Leprechaun-Gravy Fairy drops a content gateway item.
Ancient Yuletide Troll
Angry Jung Man (two Mr. Accessory)
Astral Badger
Attention-Deficit Demon (two Mr. Accessory)
Baby Bugged Bugbear
Baby Sandworm
Baby Yeti
Blavious Kloop (two Mr. Accessory)
Bloovian Groose (two Mr. Accessory)
Casagnova Gnome (two Mr. Accessory)
Chauvinist Pig (two Mr. Accessory)
Cheshire Bat (two Mr. Accessory)
Coffee Pixie (two Mr. Accessory)
Comma Chameleon
Cotton Candy Carnie
Crimbo Elf
Crimbo P. R. E. S. S. I. E.
Cymbal-Playing Monkey (two Mr. Accessory)
Dancing Frog (two Mr. Accessory)
Dandy Lion
Disembodied Hand
Doppelshifter
Dramatic Hedgehog (two Mr. Accessory)
Emo Squid
Fancypants Scarecrow
Feather Boa Constrictor
Frumious Bandersnatch
Gluttonous Green Ghost
Green Pixie
Hand Turkey
He-Boulder
Hunchbacked Minion (two Mr. Accessory)
Inflatable Dodecapede
Jill-O-Lantern
Jitterbug (two Mr. Accessory)
Knob Goblin Organ Grinder
Li'l Xenomorph
Llama Lama
Mad Hatrack
Nervous Tick (two Mr. Accessory)
Obtuse Angel
Pair of Stomping Boots
Penguin Goodfella
Personal Raincloud
Piano Cat (two Mr. Accessory)
Psychedelic Bear (two Mr. Accessory)
Pygmy Bugbear Shaman
Robot Reindeer
Spirit Hobo
Squamous Gibberer
Stocking Mimic
Sugar Fruit Fairy
Sweet Nutcracker
Temporal Riftlet
Unconscious Collective (two Mr. Accessory)
Uniclops (two Mr. Accessory)
Wild Hare
Wizard Action Figure