Dressage star Patrik Kittel's horse lost oxygen in its tongue during two World Cup competitions.
A series of pictures accessed by Sportbladet reveal that Kittel and other top riders apply too much pressure in the mouths of their horses.
The tongue is blue-purple
According to veterinarian Christine Levring, "That's not what a healthy tongue looks like."
Patrik Kittel responded to Sportbladet, "I understand that the images can raise questions."
The FEI is investigating the case, which occurred during the dressage World Cup.
Author's summary: Patrik Kittel's horse suffered oxygen loss.