Per 
Item #: SCP-5196
Object Class: Euclid
Special Containment Procedures: SCP-5196 is to be contained in a chamber with access to a sustained supply of cat food (not Meow Mix), at 101.5 °F, or 38.6 °C.
Description: SCP-5196 is a felis catus1 with facial features closely resembling that of a human, but disproportionate. It's lips are twice the size of it's eyes, and it's nose is similar in size to that of a grape tomato. It weighs approximately 16.8 lbs (about 7.62 kg), and is 16 inches in length (40.64 cm).
If SCP-5196 is supplied with Meow Mix cat food, it will involuntarily exert acid from its 50 acid pores, the speed of which is about 48 mph. If SCP-5196 has not consumed for 72 hours2, it will hiss at approximately 150 decibels3, and claw viciously at the containment chamber walls. Afterwards, it will reverse-age into a kitten, and repeat the aging process for about 68 hours. After 68 hours it will stop aging. When SCP-5196 is in its shrunken form, it weighs about 15 ounces.
Addendum 5196-1:
Event 5/4/20██
Excerpt from Dr. ██████'s letter to Dr. █████
SCP-5196 was found inside an apartment room next to a deceased woman. The woman, by the name of █████ ████, had an acid with a similar consistency to that of hydrofluoric acid across her torso. Based on our recent studies conducted on the specimen, I've concluded that SCP-5196 had consumed the Meow Mix from the cat bowl (labeled Kitty), and had screeched loud enough to rupture the poor woman's eardrum, which is most likely the cause of her bloody ears. The reasons for Meow Mix causing such a reaction is from the subject's natural hatred towards the food. The taste triggers SCP-5196's defense mechanism.
Addendum 5196-2:
Interview with █████ ████'s neighbor
0:02
SPEAKER: How are you doing today?
SPEAKER 2: With this warm weather, I'd say pretty well.
SPEAKER 1: I'm here to ask you about what you know from yesterday's incident. To begin, where were you on May 4?
SPEAKER 2: I was in my apartment, watching TV. My kids were hanging out with their friends, so I had nothing better to do. That's when I heard screaming. I had been watching The Office for the past 8 hours, so, y'know, I was a bit, uhh, not there, if you know what I mean. So, it was around 8 o'clock in the evening when I heard the screams come from the lady's apartment. I was thinking, "should I see what that sound was?" But then, after watching a bit more of season 2, I was like, "nah, she's probably watching some scary movie." I went to get my coffee the next morning, and I turned on the TV, and on the news, the headline was "Woman dies from acid burns" or something like that. I can't remember it that well. I was like "Holy moly she really got acid burns!" Anyways I just ignored it and watched The Office.
SPEAKER 1: Alright guys, get the ███████████.
SPEAKER 2: Wait, what? I [inaudible] anyone about this, just don't [inaudible] me.
Addendum 5197-3:
Excerpt from Tealand City Daily 5/5/20██
Local woman dies, burns found on across her torso, autopsy finds the source was possibly a homemade substance. After a week, all residents of the Tealand City Villas have disappeared. In other news, reverse-aging exists now?!
