Zombie Squirrel
The Zombie Squirrel is a BASIC pet that was available from the Pumpkin Egg during Halloween Event 2021. This pet had a 42% chance of hatching.
The latest Pet Simulator X value list for Zombie Squirrel can be found below:

Regular
💎 300

Golden
💎 1,200 (1.2k)

Rainbow
💎 3,100 (3.1k)

Dark Matter
💎 10,000 (10k)