The Pet Rock was a temporary uncommon pet in Adopt Me! that was available for free during April Fools' Day 2020.
The Pet Rock was a joke pet that was originally only available during April Fools' Day 2020, but its availability was extended to April 3, 2020. After the extended time, it disappeared from every player's inventory and became completely unobtainable.
The pet used to be available outside the Nursery, with an NPC called Burt having a few boxes of Pet Rocks and crossed-out boxes of prices.
The Pet Rock came with the ability to be flyable and rideable and was already full grown. There was no way for a player to simultaneously have two Pet Rocks in their possession, as only one could be collected from the pile near the Nursery and it couldn't be traded or given away. The Pet Rock would always disappear out of the player's inventory after they left the game, similar to a Healing Apple, Teacher's Apple, Marshmallow, Cup of Water, Cup of Coffee, Donut, and 2D Kitty.
Appearance
The Pet Rock features a gray rock that has a crude face made out of what seems like a pair of googly eyes and a taped-on dark red pipe cleaner that symbolizes a smile.
Tricks
The Pet Rock consists of the following tricks:
- Newborn - Do Nothing
- Junior - Play Dead
- Pre-Teen - Stay
- Teen - Erode
- Post-Teen - Sit Still
- Full Grown - Think
All of these tricks were the same, and the Pet Rock sat still and did not do anything.
Neon Appearance
There was speculation on whether there was a Neon version of the Pet Rock. However, it has been debunked as the Adopt Me! Twitter had officially stated that there is no Neon version of the Pet Rock. Even so, an image of one of the Adopt Me! Team members sitting on a Neon Pet Rock can be found on the Adopt Me! Twitter account. In the image, the Neon Pet Rock glows all body in pink, except by the eyes and mouth.
Trivia
- People speculate that it was released for people who do not have
Robux to use a Fly and Ride pet so that they could try it out and want to actually buy Fly and Ride-A-Pet Potions, similar to how Roblox itself had a Guest mechanic. - The Pet Rock is one of the pets that do not have wings and do not grow wings when flying, similar to some of the other pets being the Pumpkin, Arctic Reindeer, Reindeer, Ghost Bunny, Frost Fury, Stingray, Dolphin, Narwhal, Seahorse, Clownfish, Octopus, Squid, Mechapup, Ice Golem, Shark, Capricorn, Space Whale, and the Dancing Dragon.
- The Pet Rock, Pumpkin, Scoob, and 2D Kitty are the only four limited pets in Adopt Me! that cannot be traded and were only available for a short period of time. Players were not able to obtain them after the event was over.
- Burt had a lot of money left over so he thought it would be a good idea to buy and sell some Pet Rocks, which he immediately regretted. Since he wasn't able to profit off of the Pet Rocks, he just gave them to players for free for three days.
- The Pet Rock is the first pet to be obtained from an April Fool's update, the others being the 2D Kitty and Rock.
Robux to use a Fly and Ride pet so that they could try it out and want to actually buy 
