The term "special release" encompasses a few different types of pets. The common theme between all of them is that they employ an unusual release method, and tend to be quite unlikely for the average user to receive for free from their regular participation in the site activities. This leads to a tendency for special release pets to be quite valuable.

Unreleased pets

Most pets are made available for a limited time, where users can adopt a random selection of a litter or outcomes. However, there are a few pets which are very special, and never get this normal release. Rather, they are created by random chance during other events. The typical unreleased (often called UR) pet is one which can only be obtained by very slight random chance by adopting from the advent calendar on December 18th. At no other time do these pets become available, which means they tend to be quite rare.

How to Get a UR Pet

The only time you can adopt an "Unreleased/UR" pet is on the 18th of December. There is a random chance that you might get one of these pets, out of several other hundred pets being released from the same box, and you are only allowed to adopt three pets from the box. This makes the UR pets quite valuable.

UR Release Dates

December 18th has been an important event on Chicken Smoothie for a long time. Due to their unique method of release, the unreleased pets have only been available on these dates (assuming they had been created at that point in time).

2008-12-18
2009-12-18 ; 2009-12-19
In 2009 the website went down for a large part of the day, resulting in people not being able to adopt. The box was extended until the 19th but those who did adopt on the 18th could not adopt again!

2010-12-18
2011-12-18 ; 2011-12-24
There was a miscalculation on December 18th in 2011, so a second box was available on the 24th to make sure the proper amount of pets were released. Users who adopted the first box could still take form the second one.

2012-12-18
2013-12-18
2014-12-18
2015-12-18
2016-12-18
2017-12-18
2018-12-18

UR Pets By Year

2008

Archive		by: Tess

UR Cat	UR Banana	UR Mint Horse	UR B-Wolf

2009

Archive		by: Tess, Moonflight, and Sorren Fey

UR Purple Horse	UR Dog		UR Apple

2010

The Malk dog came from a separate box originally, but was still released via the unreleased mechanic, just among a collection of Malk Pets. Future years the dog came from the regular box with all the other pets.

Archive		by: Shima.Luan, Ricorn, Sorren Fey, and Malk

Ur Tiger	UR Rat	UR Grapes	UR Malk

2011

Archive		by: Leurai and Tess

UR Pickel		UR Lion

2012

Archive		by: Chia, Sorren Fey

UR Ice Cat	UR Aussie/Cookie Dog		UR Flower Pot

2013

Archive		by: Try, Spotty, and Bernouli

UR Phoenix	UR Bee		UR Holly

2014

Archive		by: Tyr and Vampiric

UR Pineapple		UR Bengal

2015

Archive		by: sketchi and Lillian Nightshade

UR Peach		UR Foal

2016

Archive		by: Berkshire and Sorren Fey

UR Zonkey		UR Cinnabun

2017

Archive		by: Simon and EmberWolf

UR Peas		UR Fox

2018

Archive		by: Swiftalu and Jayfrost

UR Strawberry		UR Galaxy PPS

The Zebras

Zebras have a very special history on the site. In 2009 and 2010, there was a small chance that a user may receive a zebra in place of one of their regular horse or pony adopts, when users went to claim their free monthly adoptables. After the site's first horse artist, equimagine, retired at the end of 2010 the zebra releases were also brought to an end about a year later. That was until 2014, when the line art of these pets was redone by a new artist, and zebras returned to their unusual release pattern.

Archive				by: equimagine, revised by Sorren Fey
Plains Zebra
Mountain Zebra
Grevy's Zebra

Malk Dragons

While Malk was an official artist on the site, their adoptables came from their own box on the adoption page. Similar to the zebras' rare appearances in the equine adopts, Malk created a few different dragons that would become available in her own monthly pets. Each color was available only briefly, and by random chance, before a new color would take its place in the algorithm. By the end of 2010 Malk stepped back a bit from their position, and the dragons were retired along with the consistency of Malk pet releases.

Although the dragons are now officially retired, they are still available by random chance on December 18th, in the regular rerelease box like any other pet from the past.