One photo of your dog is all Claude Opus 5.5 needs to turn it into a playable game character

Last year a custom 3D pet meant hiring a 3D artist and an animator. Now it starts with a photo that's already sitting in your camera roll

There's one trap almost every guide skips, though. Most auto-rigging tools assume your character is a human, so if you feed them a dog you get exactly what's in the video: a very confused good boy walking around on his hind legs

To Claude Code, your dog is just a GLB file with a skeleton and a few animation clips, and the whole trick is giving it the right skeleton

Here's how it works:

pick a photo with the whole dog in frame and a plain background, and Claude writes the prompt to redraw it as a clean front-facing character sheet
Meshy or Tripo turns that sheet into a 3D model on the free tier and exports it as a GLB
give it a four-legged skeleton: Meshy auto-rigs quadrupeds (its animation library for them is still small), and UniRig, an open-source project, predicts bones for almost any mesh
start with five clips: idle, walk, run, jump and one move that's very much your dog, like fetch
Claude Code drops the GLB into a Three.js scene, normalizes the scale so it doesn't spawn giant or lying on its back, and wires up WASD, Shift and Space

You can use it for a birthday game starring the family dog, a mascot for your pet brand, or a tiny browser game where your friends play as their own pets

What would your pet's signature move be?

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