Animation Clips are one of the core elements to Unity’s animation system. Unity supports importing animation from external sources, and offers the ability to create animation clips from scratch within the editor using the Animation window.
Animation clips imported from external sources could include:
Unity’s Animation Window also allows you to create and edit animation clips. These clips can animate:
2017–10–02 Page amended
Integer properties within scripts can be animated in 2017.31 NewIn20173
2D Button added to animation previewer 2017.3