As madame rounded them up she separated the contestants who wanted to become drug sniffing dogs from the contestants who wanted to become police horses.
Mike looked at the choice and found horses more interesting. He wanted to carry people on his back, not be walked by them with a leash and if that meant that he had to have his hands encased in keratin hooves then he was up for it. He couldn't be missing out on much. Besides Madame's blacksmith had been working all night to make the horseshoes that will end up on our hands and feet. He was surprised since he laid his hands on one of them and realized that he will wear them in no time.
Day 1 was all about getting them into the right state of mind for the following days were they will have to undergo more serious changes like dragging out of their hands to become front legs and the fusing of their fingers into hoofs which madame will personally oversee.
The first day was focused on their tails and ears. Madame formed a line and one by one they sat on the bench near madame as she applied the glistening black gel on their ears,massaging them for a while. At some point she stretched them up while chanting something in an strange language. And they extended right away into full fledged Horse ears. As madame wiped off most of the black gel it was revealed that whey were fuzzy, prompting Mike to touch and fondle them.
Then she asked Mike to turn around and take off his clothes. As she said this madame got a hand full of the glistening black substance and applied where his tail should be. She chanted something in a foreign language and his tail started to slowly come out. When it got large enough she applied more gell and grabbed it with both of her hands pulling on it. As she did this it started elongating much faster. Due to his nerves in his spine being stretched out in a tail his hands and feet were filled with pins and needles he also got an hard onn due to this which madame noticed.
Don't worry it's normal for males to experience this at this part of the process.
When she cleared his tail of the black gel it's hair unfolded and created a full fledged horses tail, which he could feel the touch of madame through.