Per 
Item Number #: SCP-3346
Sketch by Dr. Pharrel "Since cameras aren't allowed in the presence of SCP-3346 I drew this quick sketch at my computer desk. The background is fantasized"
Object Class: Euclid
Special Containment Procedures: SCP-3346 is to be kept in a 3 m x 4 m x 5 m box only with one door and with no windows or other 'see-through' materials. Both on the inside and outside of the box must there be no reflections. Cameras must be stationed in two corners of the box, opposite each other. The camera's lenses must be ensured to have no reflections too. Absolutely no kind of light can enter. Chemical Explosives are to be stored outside every wall of the containment box. If a large flash or sudden movement appears inside the box these explosives must be triggered. Two guards are to be stationed outside this box at all times.
Description: SCP-3346 has no real appearance. It originally infiltrated the facility camouflaged as a tier-3 scientist (Date ██/██/████) but was quickly uncovered as no nametag was present and it's communicational abilities were unnatural and unevolved. It seems to be able to take the form of any living creature but seems to prefer the form of humans. Even though it's only capable of growling it shows very strong human emotions, very similar to subject-█████. This is most likely because of the subjects repeated presence under testing.
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Addendum:
Under NO CIRCUMSTANCE should anyone try to communicate with SCP-3346. It is a faster learner than it would seem, and must therefore never receive any items under the following categories: Texts, Pictures, Audio/Voice, organic matter, sculptures / architectural structures and standard prohibited items.
SCP-3346 spends most of its time sitting curled up on the floor with every muscle flexed. It does not seem to breathe with lungs. When SCP-3346 is observed closer it is seen to have bulges moving in a breathing-like pattern. These bulges often appear on its head.
[Dated Reports]
[15/06/████] Dr. Pharrel and Dr. █████
We have begun testing SCP-3346's communicational abilities. We sent in subject-942, they would be a good first subject since they're mute. No reaction from SCP-3346.
[22/06/████] Dr. Pharrel and Dr. █████
Subject-942 has been sent in again, SCP-3346 seems calmer. It still isn't trying to communicate, we might need to change the subject.
[24/06/2017] Dr. Pharrel
The subject seems angsty or annoyed like it's looking for something. It has tried to take the form of subject-942 but failed as it was given a controlled shock. This might arouse problems, so for safety reasons, subject-942 has to be sent in on a regular basis unless testing is specifically needed.
[26/06/████] Dr. Pharrel
Subject-942 has now been sent in on their first day without the specific need for testing. SCP-3346 is visibly happy. It growls in a happy manner at subject-942. This might be good for future testing.
[01/07/████] Dr. Pharrel and Dr. █████
SCP-3346 has been mad the whole day today. It was smashing itself into the walls but has failed to do any damage to anything other than itself. Subject-942 was unable to come in today for unspecified reasons.
[05/07/████] Dr. Pharrel and Dr. █████
SCP-3346 acted very nice today. Even though subject-942 was delayed. SCP-3346 seemed to wait happily. Before today no contact or communication was made except for eye contact, but SCP-3346 reached out to the subject, slowly and nervously. Subject-942 was asked by speakers to not touch SCP-3346 and they obeyed.
[05/07/████] update 2 Dr. Pharrel and Dr. █████
SCP-3346 is furious, they have not calmed down. We were unable to send subject-942 because of the creature's actions. This has aroused problems, the camera systems are down they were smashed under the aggression of SCP-3346. We gave it a few controlled shocks, but it had no effect.
[06/07/████] Dr. Pharrel
SCP-3346 still hasn't stopped. Dr. █████ is not with me at this moment. They insisted to go down to the box. This might lead to worse problems, but since they have a PhD in psychology I was unable to have any counter arguments of them going down.
[06/07/████] update 2 Dr. Pharrel
Subject-832 was sent in before Dr. █████ entered. We found a time to quickly shove the subject in. We could not send in subject-942 since the cameras are down we wouldn't hear the reaction of both the subject and the creature. The subject screamed loudly for a few seconds and then went quiet almost immediately. Dr. █████ went in and seemed to have calmed SCP-3346 down. They exited and nodded to the cameras outside the box.
[09/07/████] Dr. Pharrel and Dr. █████
The cameras have been fixed inside SCP-3346's box. The creature seems to be in their state from [15/06]. Subject-832 was killed in an unknown way inside the box on the date [06/07]. Subject-832's corps is still being investigated for possible ways to have died.
[10/07/████] Dr. Pharrel
Big mistake! When Dr. █████ left the box on date [06/07] they did not leave. SCP-3346 has taken the form of Dr. █████ and eliminated them from existence. Their corps is gone. A full lockdown is undergoing in this facility wing. SCP-3346 cannot escape.
[10/07/████] Dr. Pharrel
SCP-3346 is changing form faster than expected! The security teams are unable to capture it with this high intensity camouflaging. It has taken the form of multiple different security members and even managed to mix some facial features to not be discovered. The 3 first teams who was sent in has been completely eliminated. Luckily not a single thing has been able to leave the wing.
[12/07/████] Dr. Dwight
SCP-3346 has successfully been contained. Higher security procedures are now active, with two guards be stationed outside the box at all times. Sadly, many lives were lost recently, but those things are to be expected at such a dangerous worksite. I excuse my previous colleague's unprofessionalism with those terrible last reports.
