Blender 4.0 and newer (tested on 5.2 LTS). The add-on runs on Windows, macOS and Linux.

Ant Trail is tuned for the ant rig included in the demo scene (bones Coxa / Femur / Tibia, legs L1-L4 and R1-R4). It works with that rig and with copies of it. Creature rigs with different anatomy are not supported.

No. The walk is generated procedurally and updates in real time, so you can frame your shot and render straight away. You only bake when you need real keyframes - typically for an FBX export, or if you want motion blur (with un-baked procedural motion Blender can crash).

Yes. Bake + Export FBX writes one ant with one skeleton and one animation, with your colour baked into a texture, so every viewer plays the walk with the legs moving. Verified import into Cinema 4D: 1 rig, 42 joints, 297 animation tracks.

Yes. The add-on code is licensed GPL. The ant model and the demo scene are yours to use inside your own projects; please do not resell or redistribute the demo assets on their own.