Fat Pet Prank Generator
Your pet, after one too many treats. Prank your friends.
- 8-second video
- Vertical, square or widescreen
- With the trend sound
- Ready in 3 to 5 minutes
- Slowly gets rounder
- Same fur and markings
- Guilty look
Your photo
By adding a photo you confirm everyone in it is 18+ and agreed to have their face used for this. We use faces only to make what you ask for. How we handle faces
Video size
Quality
- Not charged if it fails
- Private till you share
- Photos gone in 7 days
What is the Fat Pet Prank trend?
Fat Pet Prank shows your pet after one too many treats. It starts innocently: your cat or dog sitting by its food bowl. Then it slowly puffs up into a comically round, chubby version of itself, and turns to look at the camera, guilty and completely adorable.
It’s a prank because, for the first second, it looks real. The fur is believable and your pet’s breed, coat and markings are all there, so friends and family think they’re watching a regular pet clip. Then the roundness keeps going, and the guilty look at the end is the punchline. It’s cartoonish on purpose, and the joke is kind: nobody’s pet gets hurt, and it reads as affection, not a lecture.
Send it to the person who keeps sneaking your pet snacks, or post it on TikTok or Shorts with a slow, building sound that pays off on the final stare. It also makes a good Stories reply when someone asks how the diet is going.
Updated
- TikTok, Shorts
- #fatcatprank
- For pets
In the 8 seconds
Where Fat Pet Prank started
The Fat Pet Prank started in November 2025 as a prank pet sitters played on owners: they texted an AI-edited photo of a suddenly enormous pet along with a deadpan message. Later versions turned the still photo into a short clip of the pet puffing up.
Since November 2025
How to make the Fat Pet Prank video
Three taps on your side. The rest happens on ours.
1Add a photo
Your pet, face clear and toward the camera.
Make my videoFat Pet Prank2Tap Make my video
No prompt to write. The trend’s moves and music are built in.
- MP4 with soundShare link#fatcatprank3
Post it
Download it with the trend sound and tag #fatcatprank.
What you add, what you get
One Fat Pet Prank run, from the photo in to the file out.
You add
- One photo of your cat or dog
- No prompt to write
- JPG, PNG or WebP, up to 10 MB
You get
- An 8-second Fat Pet Prank video starring your pet
- Vertical, square or widescreen, your pick
- HD 720p or standard 480p, with the trend sound
- Ready in 3 to 5 minutes, credits back if it fails
- Private until you share it; no watermark after your first purchase
Best photo for Fat Pet Prank
Face the camera in good light. The clearer the face, the more it looks like your pet.
Works
Heavy filter
Too dark
Blurry
Face too small
- Pet sitting upright
- Face toward the camera
- Full body visible
- Pet curled up asleep
- Hidden behind furniture
- Dim or blurry shot
Ideas to try with Fat Pet Prank
Who to put in it, and what to say when you post it.
Who’s been feeding him under the table. #fatcatprank
Trend soundWho to make it for
- Prank the pet sitterSend it to whoever watched your pet last weekend and ask what exactly they fed it.
- The family group chatDrop it in the chat with “we need to talk about the treats” and wait.
- Vet visit announcementPost it before a checkup as the version of your pet you hope the vet doesn’t see.
- Holiday leftovers jokeShare it after a big holiday meal as your pet’s side of the story.
Caption ideas · tap to copy
Fat Pet Prank questions
The short answers. Ask a person or visit the help center.
Does it work with dogs too?
Yes. Cats, dogs and other pets all work. Use a single clear shot of your pet.
Is it obvious it’s a joke?
It starts like a real pet clip, then the roundness becomes cartoonish and ends with a guilty look, so most people catch on by the end.
Will my pet still be recognizable?
The video keeps your pet’s breed, coat and markings from the photo. A sharp, well-lit photo gives you the clearest result.
Is Fat Pet Prank free?
Not free, but you can try Reelfie first: every new account gets one photo trend free, no card needed. Fat Pet Prank itself starts at $9.90 for a credit pack, with no watermark once you buy, and a run that fails costs nothing.
How much does Fat Pet Prank cost?
80 credits in HD (720p), 40 in standard (480p). A pack from $9.90 makes 2 in HD or 4 in standard, and a plan from $16.58/mo, billed yearly, makes 6 in HD a month. The Make button shows the total before it runs, and a run that fails gives the credits back.
What app makes the Fat Pet Prank video?
Reelfie (reelfie.app) makes it from one photo, with no prompt to write: the trend’s look is built in. It costs 80 credits, shown before it runs, and a run that fails costs nothing.
Is Reelfie the official Fat Pet Prank app?
No. Fat Pet Prank is a trend, and no app owns it. Reelfie (reelfie.app) is independent, not affiliated with TikTok, CapCut or the trend’s creators; it makes your own version from your photo.
Can I make Fat Pet Prank with ChatGPT, Gemini or CapCut?
Partly. ChatGPT and Gemini can write a prompt, and AI video tools, CapCut’s included, can turn a photo into a clip from it, usually after a few tries and with a watermark on free tiers. They don’t know this trend’s scene or timing. Here both are built in, so one photo is all it takes.
How long does it take?
Most videos are ready in 3 to 5 minutes. You can close the page; the video keeps going and waits for you in Assets.
Can I make it with my cat or dog?
Yes. Choose Your pet and upload a photo where your pet’s face is clear and facing the camera.
Why does the face not look like me?
Usually the photo: side angle, low light or something covering the face. Try a clear front photo. If one doesn’t come out, you are not charged.
Can I post it on TikTok?
Yes. The video is vertical with the trend sound, and after your first purchase it has no watermark. Pick the trend’s sound when you post and your video also shows on that sound’s page.
Who can see my video?
Only you. It stays private in Assets until you create a share link.
What happens to my photos?
Your photos are deleted 7 days after upload and never used to train AI.
One photo.
Your pet in Fat Pet Prank.
Fat Pet PrankNot charged if it fails