I was once feeding my partbred Arab "Bechir" a muesli bar with some small
dots of chocolate on top the day after a national ride (50 Miles).
I got warned by our vet, that I was not supposed to do that before, during
or before final vetinspection, as it does show up. She said even the little
dots.
Better, you keep all chocolate far away from your horse and make sure other
people do too! (although it makes me feel sorry as they seem to love it).
Greetings,
Desiree Hanen - The Netherlands
((Still... it takes Love over Gold & to finish is to win!)