To reset the location, rotation, and scale of an object's animation in Blender, use the following shortcuts:
- Alt + G: Resets the location/position.
- Alt + R: Resets the rotation.
- Alt + S: Resets the scale.
These shortcuts will return the selected object(s) to their original location, rotation, and scale as defined by their initial state (i.e., before any animation keyframes were applied). Be aware of the object's origin point; the object will return to the origin.
Important Note: This method resets the object to its initial state. If you have already applied location, rotation, or scale transformations (using Ctrl+A), these shortcuts will reset the object relative to that applied transformation. Applying transformations essentially makes the current location, rotation, and scale the new "default."
In summary, to truly reset an animation, ensure you haven't applied any transformations before using the Alt+G, Alt+R, and Alt+S shortcuts.
