A well-trimmed horse hoof should be round and even, with the toe and heel of the hoof evenly balanced. The horse's hoof should not have any sharp edges or points, and the frog (a triangular-shaped protrusion on the bottom of the hoof) should be healthy and intact. The horse's hoof should have an even, dark color all the way through.
If your horse's feet do not look like this, then it is again time for trimming. A horse should go in for regular trimmings – generally once every eight weeks. The horse may need more frequent trimmings if it is experiencing problems with its hooves.