Here is how it happened.
Late September 2026, scrolling Instagram, people hit a short comedy clip. A person offers a black cat a treat. The cat sits up, grins, claps, covers its mouth, and reaches out for a handshake. The post is from Aleksandr Kim, under the handle @merkurianin, dated 25 September 2026. Within about a week it passed 2.5 million likes.
The caption did not need a long explanation. The clap was the joke.
By the last week of September and through October 2026, TikTok and Reels had turned that cat into a green-screen reaction. People dropped the same cutout behind a classroom, a bathroom stall, or a bad decision, and let the cat applaud something that did not deserve applause. The black cat in the original clip is widely called Peep.
This guide covers the meme, the difference between pasting that cat and generating a new one, and how to make a vertical Cat Clapping video from two photos.
What the original clip actually does
The version that spread is an AI comedy edit, not a trained pet. The recognizable beats are short enough to read with the sound off:
- The person is in the foreground, looking down at the floor.
- The cat sits upright.
- It claps its front paws.
- It brings one paw up to its mouth.
The original edit goes further — a human grin, human-like hands, and a handshake. Most reaction posts only need the clap. That is the beat a phone template can keep without pretending to be the September 25 file.
Why it spread
The clap works as a reaction. You do not need the setup. A green-screen cutout let one cat comment on anyone else's video. A two-photo version does something else: the person and their own cat play the beat, so the post is not another paste of the same black cat.
It moved on TikTok, Instagram Reels, YouTube Shorts, and X. Vertical, short, and obvious in the first second.
Two ways people are making one
A CapCut green screen. Fast, and often free. It is the original AI cat, cut out and dropped behind a caption. Your cat is not in it. Your room is not in it. If the post is "look, the meme cat," that file is enough. If the post is "look, my cat," it is the wrong tool.
A dedicated template. The Cat Clapping template on ViralReel takes two photos: the person first, the cat second. Orange Tabby, Tuxedo Clap, and Black Cat are the same clap. The cat sits up, claps, and brings a paw to its mouth. The page opens on 9:16, and the length is 4 or 6 seconds. No prompt, no app install.
The orange tabby version.
The black-and-white tuxedo version.
The solid black cat.
These previews are the template look. They are not a generation made from your photos, and they are not the reference video the model uses. That reference is set once in the admin panel for the whole Cat Clapping series.
How to make one
- Open the Cat Clapping template and pick Orange Tabby, Tuxedo Clap, or Black Cat.
- Upload a clear photo of the person, then a clear photo of the cat. The cat's face and front paws should be visible. Skip sunglasses, group shots, and heavy filters.
- Leave the ratio on 9:16. Set the resolution and a length of 4 or 6 seconds. The credit cost updates before you generate.
- Download the MP4. In TikTok, Reels, or Shorts, add a trend sound and turn on the AI label where the app asks.
Use a photo you have permission to use: your own cat, or a cat whose owner agreed. ViralReel is an independent template site. It is not an account of Aleksandr Kim, @merkurianin, or the cat called Peep.
One-time credit packs start at $9.9 (90 credits) on Pricing. Monthly plans start at $9.9/mo (90 credits) on Subscribe. Top-ups are 12 credits = $1. The generator shows the exact credit cost for the resolution and duration you pick. Failed or canceled generations are refunded automatically.
Questions people ask
What is Cat Clapping?
Cat Clapping, also called Black Cat Clapping, is the 25 September 2026 AI clip in which a black cat sits up and claps. Through October 2026 it became a green-screen reaction for sarcastic applause.
Does the cat have to be black?
No. The original silhouette is black because it reads on a phone. Orange Tabby, Tuxedo Clap, and Black Cat follow the cat in the photo. The joke is the clap and the paw over the mouth.
Is this a paste of the original cat?
No. A green-screen post reuses that cat. This template generates a new clip from the two photos you upload.
What ratio and length should I use?
9:16, and 4 or 6 seconds. The clap is short, and that is the length TikTok, Reels, and Shorts already use for this meme.
Is ViralReel the official Peep account?
No. ViralReel (viralreel.app) is an independent AI video template site. It is not affiliated with Aleksandr Kim, @merkurianin, the cat called Peep, TikTok, Instagram, or YouTube.
Want the clap with your own cat? Open the Cat Clapping template, two photos, about a minute.