But coaches and athletes say that trainers are a decent -- though sometimes noisy -- substitute.
On Thursday, General Younes said that trainers from Qatar were teaching rebel fighters how to use antitank weapons.
He denied that trainers had pushed the animals too hard, or that Tilly bore any responsibility for his actions.
Ken Germano, executive director of the American Council on Exercise, cautioned that trainers should not dispense health or medical advice.
Today, California officials say veterinarians' vehicles are so numerous on the backside that trainers complain they have trouble getting their horses onto the track.
In one exercise, he learned to identify specific objects that trainers pointed to, reflecting the high intelligence of his species and the ability to learn quickly.
Some try to influence the "messages" that trainers deliver, for example by insisting that their diplomats talk to classes on a regular basis.
Though the president left open the possibility that trainers might still advise Iraqi troops, military officials said the chance of putting any significant American force there was slim.
He does not look at the Daily Racing Form or the Ragozin Sheets, handicapping tools that trainers increasingly rely on to pick races for their horses.
Mr. Crocker noted that General Allen had made it clear that trainers and advisers would be likely to remain after 2014.
Dr. Hunt added, "The board must also understand that trainers make nearly 100 percent of all veterinarian decisions regarding the medication of their horses".
