Axolotl

Axolotls are aquatic passive mobs.

Spawning
Axolotls do not currently spawn naturally, being available only from buckets or spawn eggs in the Creative inventory. They can also be obtained by the command. Axolotls despawn over time if not spawned by a bucket.

In a future version, axolotls will be found in lush caves.

Colors
Axolotls can be one of five colors: pink (leucistic), brown (wild), gold, cyan, and blue. The blue variety has a $1/1200$ (0.083%) chance, giving the common varieties a $1199/4800$ (~24.98%) chance individually.

Axolotls picked up and re-spawned with a bucket do not preserve their color. Baby axolotls picked up and re-spawned with a bucket do not preserve their growth stage and turn into an adult.

Behavior
Axolotls are passive toward players and can be attached to leads. Axolotls were intended to give Regeneration I and remove Mining Fatigue when a player kills a mob that is in combat with an axolotl; this currently does not work.

Axolotls are hostile to fish, squid, and glow squid. Axolotls attack drowned and guardians (but not elder guardians) when tempted with tropical fish by a player. Drowned and guardians always attack axolotls.

If an axolotl takes damage underwater, it may feign death, dropping to the ground for 200 tick while gaining Regeneration I. Monsters ignore healing axolotls. There is a $1/3$ chance for an axolotl to play dead to recover. In addition, if either a random integer from 0–2 (inclusive) is less than the amount of incoming damage, or the axolotl's health before the damage is dealt is less than 50% of its maximum health, it plays dead.

On land, axolotls move toward the nearest water source because they die outside of water after 6000 tick. Unlike fish, dolphins, and squid, axolotls do not die on land during rain or a thunderstorm.

As aquatic mobs, they take extra damage from the Impaling enchantment.

Breeding
Adult axolotls can be led and bred with tropical fish or buckets of tropical fish. After breeding, a baby axolotl spawns and 1-7 experience is generated. The parents cannot be bred again for 5 minutes. The baby axolotl has a $1/1200$ chance to be the rare blue variant; otherwise, it inherits the color of one parent. Babies follow adults, and grow to adulthood in 20 minutes. The growth of baby axolotls can be accelerated using tropical fish; each use reduces the remaining growing time by 10%.

Entity data
Axolotls have entity data associated with them that contain various properties.

Trivia

 * are small salamanders that are endemic to Mexico, which are critically endangered, following Mojang Studios' trend of adding endangered species such as polar bears, giant pandas, sea turtles and bees into the game for awareness purposes.
 * Axolotls are the first amphibian mobs implemented into Minecraft. However, it was not the first announced amphibian because frogs were announced at MINECON Live 2019.
 * Blue is the only color variant of axolotls that are not based on real life. The blue variant was a suggestion by user Darkiceflame on Reddit's Minecraft suggestion Box. It is a reference to Mudkip from Nintendo's Pokemon series.
 * Despite being amphibians, axolotls are bred like mammals instead of laying eggs, similar to chickens.
 * Axolotls were added on 2020/12/16, 2 years and 4 days after the song, Axolotl by C418 on 2018/12/12 during the Update Aquatic.