A lot of common garden plants are toxic to goats - I would recommend you borrow a book on toxic plants from your local library.
Yes
Yes, Roundup can effectively kill goat heads, which are a type of weed, when applied according to the product's instructions.
Roundup kills any plant. It does struggle with goat heads though, as the root needs to be destroyed with those nasty plants.
Venomous snakes might kill a goat in self defense. Large constrictors, such as pythons and boas, may kill a goat as food.
With its horns and hooves
motor oil, of any kind, would kill most plants
Goat lives on plants and grass so it is a herbivore.
Its a mammal
NONE
A milk goat is normally a dairy goat of which there are many breeds eg Saanen, Toggenburg, British Alpine, Anglo Nubians
no cause they only eat plants :)
It is if you kill someone you are to be eaten by a goat