This issue certainly has 2 sides and both have reasonable arguments.
Considering all of the arguments, I do not believe 'over showing' an animal is a reasonable argument. Many have used the phrase 'shown to death', I challenge anyone to demonstrate an occurrence of 'death by over-showing'. Now, I understand most people are using that phrase as an over exaggeration to make their point, but exaggerations tend to reduce the validity of an argument, not support it.
The obvious extension to the argument is the 'well maybe not to death, but some ponies are shown too much'. I would like someone to define 'too much' as to the detrimental effect on the animal. Again, I would challenge anyone to demonstrate an occurrence of 'injury due to over-showing'.
The last extension to the argument would be 'well showing in "x" number of classes per day is too much'. Any of us would defend an animal who was being beaten because it is too exhausted to continue. But, short of that, just because a pony gets tired after a number of classes doesn't mean it is being treated inhumanely.
The primary reason this is a concern to me is people who show one pony in many classes is far more likely to be an amateur who is showing for the fun of it. Now they read that others at the show think they are being inhumane? How likely do you think that amateur is to want to go to a show at all, when they know people are talking this way about them?
My secondary concern is people, like me, who bring a young pony and only pay once to show it in its open class are not the exhibitors that end up paying for the majority of a show. The people that pay the way for all of us 'one and doners' is the exhibitor that brings a pony that they show in many classes. I appreciate that they do and I hope they have fun.
Dr. Taylor