well yes, they doBecause they hurt? The first time I accidentally BARELY brushed my little finger against one as I was walking by (having no idea it was a plant I wanted to avoid) my finger was tingly for almost 24 hours.
The alpacas don't eat it, the chickens don't eat it, the goats the people had who gave us the alpacas didn't eat it. I don't know if what we have is the same as what you have. When not just coming up they have a squarish woody stem. I did look up urtica dioica and it looks like the same thing.
