Join Date: Dec 2009
Location: Olds, AB Canada
Firstly, horses don't breathe through their mouths. They can cough but they don't breathe through their mouths. Period.
Secondly, a bit is a tool. Period. A physical object. It is what you do with that object that will become a good thing or a bad thing.
A knife is an amazing tool. Try to go a whole day without using a knife. It's hard. So, I knife is very useful but can also easily kill someone. It's not the knive's fault, it is the person who used is the wrong way.
So, bits do not cause pain. It is only the hands that use the bit, will use it the correct way (which wont cause pain) or incorrectly (which will cause pain).
This also goes for Bitless bridles, Hackamores, bosals etc.. Used with too much pressure they will tear the skin and break the horse's nasal bone or jaw bone.
Horses are scared of two things... Things that move and things that don't.