What kind of weeds are poisonous to goats?

[Baymule]

Yeah, a few things can hurt goats. Azaleas, rhododendrons, yew, wilted cherry leaves, nightshade… those are the main ones.
Most goats won’t touch them, but if I see them in the pasture I just fence or pull them to be safe.

You probably don't have them where you are, but oleander is terribly poisonous, no antidote, no being sick and recovering, just a nasty death. They are popular landscape plants along the coastal areas.