Examples of SCP-511-1 resemble ordinary Felis domesticus that 
have undergone extreme neglect. They display a body condition 
score of 2 or 1, regardless of the amount of food available. 
Ulcerated skin is common, as are parasitic infestations, tumors, and 
various viral and bacterial infections. (SCP-511-1 are known carriers 
of a particularly virulent strain of .) A typical SCP-511-1 
shows no interest in grooming itself, and has patchy and matted fur. 
It is unclear to what extent the physical condition of an SCP-511-1 is 
a result of the influence of SCP-511, and to what extent it is due to 
sub-optimal living conditions. 


Several observations have been made of an SCP-511-1 retrieving 
biomass from elsewhere and bringing it to SCP-511 to be 
incorporated. 


Addendum 1: Incident report of containment breach at Site 511- 
+ Incident I-511-11 
Document# I-511-11 


Personnel involved: D-7856, male subject 35 
years of age. 


Date: 08/27/19 


Location: Site 511-, | Evergreen Way, 
, California. 


Description: After determining that a 
permanent human presence at a SCP-511 site 
results in moderation of aggression in 
SCP-511-1, containment protocol is updated to 
require class D personnel reside on-site in the 
event the original homeowner is deceased. Six 
months after this policy is established, D-7856 
is assigned to Site 511- . As expected, within a 
week, aggression levels of SCP-511-1 toward 


(She gestures towards the empty air and 
frowns.) 


D-6512: Something is off about him. 
Dr. Booker: Can you explain? 


D-6512: Uh, he's just weird looking? I'm not 
sure how to explain it. His legs seem too long. 
But not in like a tall way, like in a "extra bones 
kinda way. 


(She pauses and holds her stomach.) 


D-6512: Doc, I'm not feeling so great. That's 
not Skippy, | Know that for sure. Skippy had 
cute little brown eyes. This dog either doesn't 
have any eyes or they're just, dark? | dunno. 
Oh fu- oh fuck. 


(The subject's eyes widen. She retches, then 
vomits on the floor, falling to her knees. She is 
muttering something with tears in her eyes. 
Intermittent low sobs come from her throat.) 


D-6512: Doc...Skip's gone, he...fuck. 
Something just...opened him up. He's all 
inside-out, his blood and guts are all over the 
place. Please let me out of here. 


Researcher Note: Direct line of sight required 
to the anomalous animal. Working on ways to 
make this process somewhat less "gross", not 
sure that's possible. 


D-6512 expired four days after testing. Guards 
report she began to scream before bashing 
her head against the wall repeatedly. Found 
dead in her cell the next day with a pen 
stabbed into her throat. - Dr. Booker 


Experiment Log 3945-1b 


Experiment: Testing Reactions to SCP-3945 
w/ Interview 
Personnel: Dr. Booker, D-1422 


Dr. Booker: Alright, we're recording. D-1422, 
we're going to go through a brief interview 
before we start the test, okay? Can you first 
tell me what kinds of pets you've had in your 
life? 


D-1422: Uh, yeah. | had a dog when | was a 
kid, a German Shepherd named Gus. We also 
had a couple cats that ran away when | was 12 
or so. My mom thinks the coyotes got 'em. 
Then, when | was 25, | had an English bulldog 
named Purdy, best dog | ever had. Oh, and a 
bird. Well, more of my mom's bird. 


Dr. Booker: The pets that didn't run away, 
how did they die? 


D-1422: Gus and Purdy both died of old age. 
Not sure about the bird. 


Dr. Booker: Okay. | just have one more 
question — do you have any history of mental 
illness in your family? Any psychosis, 
schizophrenia, anything like that? 


D-1422: Not a shred. 


Dr. Booker: Thank you for that. Please enter 
the test cell and inspect the object inside. 


(D-1422 enters the chamber and makes eye 
contact with SCP-3945.) 


D-1422: Christ. 


(He continues to inspect the tire, looking it all 
over. He turns towards the glass and shrugs.) 


D-1422: Is this a scavenger hunt? Is there 
something I'm supposed to find here? 


Dr. Booker: Please continue to observe and 
report any phenomena that occur. 


(Thirty minutes pass by. D-1422 suddenly 
surges out of his seat, getting on his hands 
and knees. His face lights up in glee.) 


D-1422: Purdy! Now if you ain't the prettiest 
girl...| thought you were dead. Look at you, 
rollin’ around on the ground. | missed you so 
damn much. 


Dr. Booker: D-1422, can you tell me what 
you're seeing? 


D-1422: It's Purdy! She looks almost good as 
new...a little bigger than | remember, though. 


(D-1422 is now sitting cross-legged on the 
floor. He acts as though a dog is licking his 
face, laughing. After two minutes and forty 
seconds, he makes a guttural noise from his 
throat, holding his hands out as though he was 
reaching out to someone. Tears roll down his 
face and he begins sobbing.) 


Dr. Booker: Can you tell me what happened? 


D-1422: (sobbing) Oh fuck, Purdy girl...what 
happened to you... (D-1422 moves his hands 
as though he's gathering things into a bundle. 
He holds the imagined bundle in his arms as 
though it were a baby, rocking back and forth 
on the floor.) 


Dr. Booker: D-1422, please describe what 
happened to Purdy. 


(D-1422 is unresponsive to any questioning, 


still rocking and holding his arms in the same 
position. He is taken back to his cell.) 


Researcher Note: It appears the anomaly 
SCP-3945 is causing hallucinations of pets, 
specifically of a pet the subject is fond of. 
Interestingly, thermal imaging shows nothing, 
though Hume readings correlate to anomalous 
activity in the testing cell. 


D-1422 has been catatonic since testing. 
Doesn't speak, hasn't eaten anything, only 
occasionally drinks water. I've asked him if he 
still hallucinates, as the camera feed in his 
room shows repeated reactions to unseen 
stimuli. No dice. 


| find it interesting that I've not hallucinated 
anything. My dog Shelly is still alive. Maybe 
there's a link there. Only dead pets? - Dr. 
Booker 


Experiment Log 3945-1c 


Experiment: Testing Reactions to SCP-3945, 
Interview + No Pets 
Personnel: Dr. Booker, D-0909 


Dr. Booker: Recording now. D-0909, I've got 
a few questions I'd like you to answer. Have 
you ever owned a pet? 


D-0909: A pet? Nah. My pops always told me 
animals were too messy and | guess | just 

never really liked dogs or cats as a result. Shit 
everywhere and make the whole house smell. 


Dr. Booker: To be clear, you've never owned 
a pet in your life? 


D-0909: Nope. 


Dr. Booker: Okay. Please proceed into the 
test cell. Inspect the object in the corner. 
Please make sure to view all parts of the 
object. 


(D-0909 walks into the test chamber. He looks 
around and then walks over to the tire. He 
turns it over a couple times, rolling it from one 
side of the test chamber to the other while 
grinning at the test booth. He makes eye 
contact with SCP-3945. Almost immediately 
thereafter, he stumbles into the corner and 
begins screaming at the top of his lungs.) 


D-0909: Holy fuck, what is that? Are you 
seeing this? Jesus, get me out of here, please 
open the door. (He attempts to turn the locked 
handle, growing more and more panicked.) 


Dr. Booker: Please describe what you're 
seeing. 


D-0909: (yelling) \t's a massive fucking cat, a 
panther or something, just sitting there in the 
corner watching me with these big fucking red 
eyes. (stammering) \t has a, uh, a bell anda 
collar on. (He cowers in the corner.) \t's not 
even moving, just staring. Come on man, get 
me outta here, this isn't funny. (He starts 
frantically moving the door handle back and 
forth and banging his shoulder against the 
door.) 


(At Dr. Booker's request, the guards open the 
door and D-0909 stumbles out. He scrambles 
into the furthest corner of the room, the guards 
moving to restrain him. His breaths are heavy 
and labored, eyes wide.) 


D-0909: Doc, it's staring right at me right the 
fuck through that wall. One of you guys kill it, 


shoot it or something. | can't handle this crazy 
shit. 


Dr. Booker: What do you mean "through the 
wall"? 


D-0909: (agitated, aggressive) What do you 
think | mean? Fuckin' moron. (He moves 
erratically in the arms of the guards, bobbing 
his head.) 


(After 30 seconds, D-0909 calms down, 
slumping in the corner. He speaks in a low 
voice.) 

Its eyes won't stop watching me. 


Researcher Note: D-0909 started yelling 
something specific today — "shade", same as 
the text on the bell. A name? 


Interestingly, D-0909's description of the 
panther about matches the biomatter on the 
tire. As of now, D-0909 is in his cell shouting 
about the panther's eyes. He says they're 
following him throughout the facility, that he 
sees them at night, bobbing back and forth in 
the darkness like he's being hunted. More 
tests recommended to see if the panther is 
recurring. - Dr. Booker 


UPDATED 12/02: 


D-0909 was found dead in his cell; massive 
gashes to the throat and stomach, entrails 
missing. 


Also, there were tons of drawings in his cell. 
Lots of pairs of red circles. 


SCP-3946: Situation Normal 


First sight of SCP-3946, recovered from local civilian's phone. 


Item #: SCP-3946 
Object Class: Euclid 


Special Containment Procedures: Due to SCP-3946's nature, 
standard relocation protocols cannot be enacted. The Foundation 
has built a small outcrop of houses along the road SCP-3946 is 
nearest to, with Foundation agents acting as residents and, in one 
case, the owner of the property SCP-3946 is located in. Because 
SCP-3946's size proves a hindrance to truly cover up, the planted 
residents must inform interested parties of SCP-3946 being an 
artificial fish habitat! in attempt to deter the overly curious. 


Description: SCP-3946 is a civilian light aircraft produced in 198 2. 
SCP-3946 is stuck in a lake located in , Walker County, 
Georgia. Inside SCP-3946 are three individuals, each an adult male 
approximately in his mid-thirties. The individuals are, by all reports, 
in good mental and physical health despite going decades without 
food, water, fresh air, or outside contact other than the Foundation. 


Attempts at moving and deconstructing SCP-3946 have yielded no 
results, its reaction to the water leaving it entirely immobile and its 
hull indestructible for reasons yet unknown. The only option to deal 
with SCP-3946 is the semi-permanent housing erected around it to 
deter civilians. 


SCP-3946 was found in 198 after a hunter called into the local law 
enforcement, informing them of the object in the lake meters ( 
feet) away from the closest road. A Foundation agent embedded in 
the local law enforcement took the opportunity to lead the 
investigation and informed the Foundation an hour after the call had 
been made. Class A amnestics were used to cover up the existence 
of SCP-3946 and later used again to set up the fake homes and 


lives of the newly arrived residents. 


Addendum: In 200 , an outburst of radio signals started from 
SCP-3946, which had been in a very rudimentary cover up due to its 
low priority. The researcher on site, one Oliver Gordon, responded 
swiftly to halt any outgoing communications and keep SCP-3946 
under control. 


+ SCP-3946-1 Interview Log 
Interviewed: SCP-3946-1 
Interviewer: Researcher Oliver Gordon. 


Notes: This interview was conducted over low 
range ham radio to keep out unwanted 
listeners. 


[Begin Log] 


Researcher Gordon: Hailing the crew of 
SCP-3946, do you read me? 


SCP-3946-1("Dale"): This is the pilot 
speaking, we read you loud and clear. We've 
been trying to get in contact for years now. 


Researcher Gordon: Well, we're happy to be 
of service. What can you tell me about you and 
this... fine vessel? 


SCP-3946-1: Well, I'm Dale, and my friends 
are Stevie and Hank. And about the plane, | 
bought it a little after it first went commercials 
and took it out for its first flight about a month 
later. Must've hit some nasty winds or 
something, because the air was as clear as it'd 
ever be when we went down. We got lodged in 
this damn lake and wouldn't sink, the doors 
wouldn't open, and, well, we haven't died of 
any natural causes yet. Suffice it to say | think 
we're gonna be here for as long as she wants 


US. 


Researcher Gordon: She? You mean the 
plane? 


SCP-3946-1: Yup, must be she's gotten 
attached. Listen, we're real happy you're here. 
Like | said, we've been trying to get in contact 
for decades now. Everyone we've gotten to 
thinks we're jokin’ with them, it's gotten right 
annoying. 


Researcher Gordon: Well, we're certainly 
happy to keep you company. It won't always 
be me, but you'll have someone to talk to 
when we've determined the best schedule to 
keep in touch. 


[End Log] 


Closing Statement: Researcher Gordon 
informed the authorities of his site immediately 
after transmission and the decision was made 
to set up a community around the lake. 
Researcher Gordon lives as the "owner" of the 
property, with other volunteer researchers 
living in the community around him. A 
contingent of armed agents are kept as 
security in the event they are required. 


+ SCP-3946-2 Interview Log 
Interviewed: SCP-3946-2 
Interviewer: Researcher Oliver Gordon. 


Notes: Interview conducted in the same 
manner as the interview with SCP-3946-1. 


[Begin Log] 


Researcher Gordon: Hailing the crew of 


SCP-3946, do you read? 


SCP-3946-2 ("Stevie"): [Laughter] Yeah, | 
read, sir. Ain't read anything in a bit other than 
the manuals in this plane, but | read. Heard 
Dale talkin' to you earlier, I'm Stevie. Pleasure 
to meet you. 


Researcher Gordon: Thank you, Stevie. Can 
you tell me anything about how the plane 
came to be like this? 


SCP-3946-2: Well, can't tell you much other 
than what Dale told you. We musta hit some 
nasty turbulence up there and we came right 
down into the lake. We all thought we was 
dead, but we came to and found the girl 
stabbed right into the lake. 


Researcher Gordon: Stabbed? Can you 
elaborate? 


SCP-3946-2: [In an exaggerated frustrated 
tone.] | was gettin’ to that, if you'd just let me. 
No sinking, no movement, we tried hitting the 
pedal so to speak, and that propeller would 
make a sound right like this, [cartoon-like 
exaggerations of a plane in flight], like we was 
up in the air, but we didn't move none. 


Researcher Gordon: Thank you, Stevie. 
That'll be all for today. We'll have someone 
come out soon and fill you in on the "nineties" 
later, since you all seem interested in learning 
what's happened since you got lodged in 
there. 


[End Log] 


Closing Statement: The researchers living 
around SCP-3946 have taken it upon 


Foundation personnel lessen considerably. 


Sixteen days after being assigned to Site-511- 
, D-7856 begins showing signs of increased 
aggression; verbally abusing Foundation 
personnel and engaging in superficial 
vandalism of Site-511- . D-7856 is 
reprimanded. 


Eighteen days into his assignment, D-7856 
interferes with a Foundation team by throwing 
garbage and yelling obscenities. D-7856 is 
subdued with a tranquilizer dart and locked in 
his quarters. 


At twenty days, D-7856 begins capturing 
SCP-511-1 and [DATA EXPUNGED}] is only 
discovered when a Foundation research team 
enters for routine specimen collection 48 hours 
later. The team discovers remains from 37 
separate SCP-511-1 collected in the kitchen. 
Bodies are dismembered and show signs of 
[DATA EXPUNGED]. 


D-7856’s body is discovered in the basement 
after an apparent attempt to [DATA 
EXPUNGED]. 


Site 511- is incinerated as an emergency 
containment procedure. 


Ok, | think there’s something to the “crazy cat 
lady” idea. Think we need to be more careful 
with the Class Ds on this one — Dr. A. 


Addendum 2: Interview with Agent , survivor of containment 
breach at Site 511-47 


+ Interview 511-A 


Interview 511-A