I know fluoride is toxic, but I think it definitely depends on the dose and type. They must have been putting extra fluoride in water because we have 4 horses here that are over 20 years old and have been drinking fluoridated water for a long time and are still healthy and active.

They are supposed to put 1ppm of poison in water, but I have heard cases where it tested 4 or even 10ppm which makes a world of difference in how quickly people and animals get poisoned. Its definitely to be avoided at all costs as it will accumulate and make you sick eventually.

I did make a post about fluoride making goats very obnoxious and changing there eating habits significantly. My dairy goats never drink fluoridated water.

http://herballure.com/ubbthreads/ubbthreads.php?ubb=showflat&Number=36363#Post36363