This model demonstrates animated rigging with three different animation cycles: Survey, Walk, and Run. These animations all drive the same joints, so for this model, only one animation should be active at any given time. glTF specifies that the client implementation may choose when to play any of the available animations.
CC0: Low poly fox by PixelMannen
CC-BY 4.0: Rigging and animation by @tomkranis on Sketchfab
glTF conversion by @AsoboStudio and @scurest