Koiote

Item #: SCP-XXXX

Object Class: Euclid

Special Containment Procedures: The enclosure is a square approximately 10 km total each side. The enclosure is divided into 4 isolated quadrants by lead walls approximately 6 meters thick and 10 meters tall. Large steel doors connect each of these quadrants, preventing SCP-XXXX-1 from changing its residential quadrant on its own. All of the walls can be electrified in case of emergency.

Every month, SCP-XXXX-1 is lured into the quadrant clockwise from the top compared to its current area. Use 20 cows aged 18-20 years as both bait and its monthly feeding. As soon as the door is locked back, the manure on the ground should be spread across the grass seeds to act as fertilizer while SCP-XXXX-1 is in other areas of the enclosure.

Description: SCP-XXXX-1 is an adult tyrannosaurus rex approximately 4.6 meters tall and 10.0 meters from the tip of its tail to the tip of its nose. The organism has a light covering of black feathers on its face and back.

A living plant or animal within 6 meters of the creature rapidly de-ages approximately one year every four exposed minutes until it is at its youngest or leaves the de-aging radius. For example, seeded plants will revert back to seeds because they were not alive before then. Wounds can be healed by de-aging to before the wounded tissue was first grown, however, lost body parts may have been first grown before birth, and it is indeterminate if that qualifies as life in this context. Regardless, long term memories revert to their state at the age the subject reverted to(see addendum XXXX). Also, working memory does not last long enough to effectively check.

Addendum XXXX: As soon as SCP-XXXX-1 was first contained, Dr. ████ of site ██ offered his aged grandfather as a test subject. After two hours in the enclosure, a team of researchers found the subject thought we were still in the middle of world war III, and had no recollection of Dr. ████. Currently the subject is SCP-XXXX-2, and is being researched to determine the long term effects of this time-reversal field.