Horse joins cycle race seems to enjoy the event - video
A cycle race passes a field with a horse, it decides to jump the fence and join in :)
The incident happened in the Criterium International in 1997 in the south west of France near Toulouse. This race was won by Laurent Jalabert's ONCE
team-mate Marcelino Garcia. The horse left the field only 20km from the finish. Thankfully nothing serious happened to any of the riders.