Per 
Item #: SCP-4355
Object Class: Euclid Keter
Special Containment Procedures: SCP-4355 is to be held in a 10x10x5 meter steel box. There should be a 0.5x0.5x0.25 meter window to view it, made with reinforced glass. A vestibule door system is required for entry. A sound frequency of 3 Hz should be playing at all times. If entrance is nessecary, change radio frequency to 150 kHz, slowly increasing the frequency by 1 kHz per minute, before entering. If containment is breached play 300 kHz frequency on the speakers in facility [REDACTED].
Description: SCP-4355 is a blind creature, most resembling an african leopard. It has no eyes, with no evidence of ever having eyes for there are no eye sockets. It has a shiny black orb built into its skull, with a golden brownish crown ringing around the front and sides of the orb, extending to the back of the shoulder blade. Its ears protrude out of the shiny surface, fully articulate and have a full range of motion.
SCP-4355 depends mainly on its hearing for navigation. To put in perspective, SCP-4355 can hear a mouse squeak from 2.5 miles away. It can hear frequencys as low as 0.325 Hz, and as high as 350 kHz. It is highly receptive to low frequencys, while high frequencys tend to irritate it.
SCP-4355 stands at 1.6 meters tall, and 3.5 meters from head to tail. Its tail is exceptionally long, at a full meter in length. The current theory for the length of the tail is that it is used for balance when sprinting. Its coating is completely black, except for the under belly which is a light grey, as well as the interior of the ears.
SCP-4355 has padded paws like that of a gecko, allowing it to scale any surface. Its hind legs are extraordinarily strong, allowing it to sprint at an average of 50 mph when fleeing and 75 mph when chasing down prey.
SCP-4355 is highly territorial, but fairly temperate if left alone. If territory is invaded, Scp-4355 will become highly hostile, killing everything in immediate sight. After it is sure it is alone in its quarters, it will return to a temperate state. If SCP-4355 leaves its territory, it will become rather doscile, unless provoked.
Addendum: 3/27/2019
SCP-4355 breached containment after a power outage in site-[REDACTED]. Vestibule door system appeared to malfunction, unlocking the doors. The power outage turned off the sound emitter, allowing the subject to break free of the calming hypnosis. It broke through both doors, and escaped via the vent system. MTF Rho-36 was called in immediate distress. Reported 17 fatalities during the recontainment procedure. See Appendum MTF Rho-36 Report. Recontainment to approximately 3 hours. The subject was found in the light containment zone. After recontainement, the subject seemed heavily stressed, having a sense of loneliness. Research into social behaviours will begin immediately.
MTF Rho-36 Report:
Site: [REDACTED]
Date: Mar, 27.2019
Troop Size: 37 personnel
Call Type: Distress call, keter class containment breach.
Mission Report: Full group entered through gate-[DATA EXPUNGED]. We split at the Heavy Containment cells. One group going through the heavy containment, the other branching off to light containment. Target was found snooping in light containment zone. As the team closed in, the target got aggitable, after going into an aggressive state, killing 13 of the men in that team. Target ran to the heavy containment, where the other team secured it into its cell, at a cost of another 4 men. Temparary steel bartacade was put in place of door, until door system can be reinstalled.
Brainstorm:
Description:
•Viral disease originated from precambrian era.
•Main victim is wild mammals, not humans.
•Will infect reptiles, birds, bugs, fish, and amphibians.
•Higly Infectious.
•Travels through direct contact.
•Enters through any oraphaces.
Function:
•Eats away at hosts brain.
•Host has 3 days to live.
•Makes animal very aggressive to any non infected organism.
•Host gains free will.
•Intentions to kill non infected, not to infect.
•Infection will occur if an organism comes to contact with any bodily fluids of the infected.
•Will not infect humans, but will use them as a source of transportation. (Disease)
•Will kill humans as well as animals.
•DOES NOT BRING KILLED ORGANISMS BACK FROM THE DEAD.
•Host can communicate with other infected.
•Grants host ability to coordinate attacks and movements.
•Greatly enhances animals' traits. (Climb, run, jump better. Dogs smell, run, hear better. Monkeys, climb, communicate, think better.)
•Once host is disease, virus will eat away at the flesh.
Effect:
•Carnivore will eat rotting corpse of infected, carnivore will become infected.
•Carnivore wounds another animal, that animal will get infected.
•Herbivore infected will attack other herbivore in herd, survivors of attack who receive injury, or came into contact with virus becomes infected.
•Corpse of killed animals will become diseased, animals that eat diseased corpse become infected.
Item #: SCP-XXXX
Object Class: Euclid
Special Containment Procedures:
