SCP-XXXX is a tall humanoid creature measuring approximately 1.85 m in height , weights 95 kg, and its arms measure around 1.25 each.
Omit the word 'tall', string 1.85 and m together into '1.85m' (do this for the other measures too), there is an unnecessary space between height and the comma, and 1.25 what? Also, is there a reason we're specifically being given the circumference of the arms? That's not a standard measure. Arm spam maybe?
It shows a thick layer of skin, with a wooden-like texture and color, however its abdomen lacks any skin, thus its muscle layer is visible.
This is written in a pretty clumsy manner and contains a few grammatical errors. I'll re-write part of the sentence as a demonstration of my advice, so, do with it what you will:
"The object's torso is covered in a thick hide with the texture and appearance of hardwood. This layer of protection ceases at the abdominal cavity exposing the muscle wall to the open air."
underneath an teal colored cloth,
While not 100% a rule, generally if the following word starts with a consonant you use "a" instead of "an".
SCP-XXXX, however, tends to prefer using its natural calls to express disturbance, anger, happiness or any other emotion.
I'd consider revising this in tandem with the sentence right before it. You can probably boil this down to the object preferring to natural calls to express emotion. You don't need to spell out what emotions are unless there is a specific one you want the reader to be aware of.
These natural sounds consist of echoey, distorted sounds of a common moose.
An awkward word choice here. The double 'sound' is what's doing it, I think.
According to the Unit, The creature has proven itself "quite a tough bastard at first"(sic) during the Retrieval Operation, however it was later successfully subdued.
This doesn't strike me as clinical at all. Fine if you want to put it into a field report but language like that is imprecise and not needed in the main body of the report.
Several interviews were conducted after SCP-XXXX's ability to properly communicate with humans. It was documented, during these interviews, that the creature is able to travel undefined spacetimes distances through gateways the creature refers to as "Gates". This way of travelling can only be accomplished by the subject in forested areas. SCP-XXXX has also admited to have been stalking an unknown number of individuals.
I highlighted the whole paragraph here. In addition to numerous grammatical errors, this feels very poorly paces and covers a lot of info-dump ground very quickly. Much of this info feels rather tacked on.
I read your interview logs and they seem fine, but I didn't go over them with the same critical eye as the body. In general, I did find the "…" natural with which you demonstrate the SCP's speech to be tough to read. You might consider narrative description of the tone and pace rather than making the text so literal.
The coding for your logs is handled very nicely as well.
