[jwparkerjr]

I would wonder about carbon monoxide poisoning. It says they appeared dizzy and disoriented when they were taken out of their trailer. With humans you can get a hint of CO poisoning by the cherry-red complexion, but I wonder it that would be true of a horse on areas like the belly.

Those trailers can be pretty tight and if exhaust fumes were getting in it would be rough on the animals.

Just a thought.

[Robe]

From other reports.. A team vet gave injections of a steroid a few min before .. suspect a toxic cleaning solution in meds....

[Neoliberalnot]

Not a bad thought. That is why we need more info on transportation method, history etc. One piece of evidence to suggest otherwise is that several horses died during the next several hours. Yes, horses with CO or cyanide, show a cherry-red appearance to the blood.