In a follow on from the plastic shoe debacle, just take a look at how the hoof is self-trimming. (I rather like the spooky, detached, effect of the hoof in the dark! ;) )
Both fores have lost the bar on the lateral side. Both retaining the bar on the medial side. The heels have already, in just 5 days and approximately only 40 km´s of movement, trimmed back to the first level of deviation. Of course the dead sole has exfoliated away, as have the higher than necessary quarters. But those toes need some assistance. The ground is too hard right now for them to ´dig in´ and wear themselves away. As for the frog - there´s a tadpole under there waiting to grow. What you see on the surface is now redundant.
Both fores have lost the bar on the lateral side. Both retaining the bar on the medial side. The heels have already, in just 5 days and approximately only 40 km´s of movement, trimmed back to the first level of deviation. Of course the dead sole has exfoliated away, as have the higher than necessary quarters. But those toes need some assistance. The ground is too hard right now for them to ´dig in´ and wear themselves away. As for the frog - there´s a tadpole under there waiting to grow. What you see on the surface is now redundant.