"A dog is different than most mammals as from the time they begin to become aroused until they begin to get soft they will have some form of ejaculate coming from their cocks. At first arousal there is a clear thin fluid that tastes like iron and has the consistency of water, this is his precum that is for lubrication so his knot will slip into the female's vagina. At full arousal is when he actually will produce his sperm and you can tell when this happens as his cum will begin to have a slightly salty taste to it."
Holy shit, theres some sick fucks out there.