Detail this asset from Unity Store: Original Link
This is a paid asset, but now you can download Animated Horse Free.
Animated Horse v1.6
Asset can be imported and used with Unity 4 Mechanim.
Model combined from 6 objects and has 2,129 polygons, 2,508 verts.
Horse has 52 bones which includes 34 body bones and 18 additional bones for the armor and horseman.
The package also contain 3 different color textures for the horse body, opacity, normals and specular maps.
I have included 3 complete textures of the horse.
All textures are in TIF format and 2048x2048px.
19 animation clips.
14 “on place” animation clips, plus 5 duplicates of walk, jump, gallop… animation clips included “root motion” data, used by Mechanim.