No, not legally, and no offspring can be created.
Defensively.
yes
That piece of flesh is called a wattle. In turkeys and chickens, it hangs from the neck. In goats, it is called a wattle and hangs from the throat. In humans, it can be seen as a small fleshy lobe sometimes present in the earlobe.
A female goat is called a doe. An entire male goat is called a buck. A castrated male goat is called a wether. And the young of goats are called kids.
No. Sheep and goats are close enough species-wise and if you cross them you get what is called a shoat. But horses and goats are too far apart genetically for a successful cross.
Many humans raise goats for their meat as well as their milk. So if you want to consider that humans predating on goats, then yes.
Goats do not mate for life; they are not monogamous animals. Female goats, or does, typically come into heat for short periods, during which they may mate with multiple males, or bucks. In domestic settings, breeding practices often involve selectively pairing goats rather than allowing them to form long-term mating bonds. After breeding, goats usually do not maintain a lasting relationship with their partners.
Defensively.
Normally, they would drink blood. Preferebly from humans and goats.
they had a new source of food
no
They might be able to because I've seen videos online that show goats AND sheep imitating humans.
Yes
yes
Yes, sheep and goats have backbones. All mammals, including humans, are vertebrates.
Yes they could but they would not stay on the humans but the human could carry them on their clothes and reinfect other goats they come in contact with.
deer are like goats mate they browse anything