Beacuse it is in there dog food.
Yes, it can make your symptoms worse.
Ragweed does not have thorns.
Ragweed antigens bind to mast cells, which release histamines.
The book Ragweed by Avi has 224 pages.
I have two donkeys that will gladly eat common ragweed. Unfortunately, I don't know of anything else that will touch the stuff. Even my goats tend to leave it alone, and they love most weeds.
http://en.wikipedia.org/wiki/Ragweed here is a link
NO! Ragweed is poisonous to horses and can kill them if it is ingested.
yellow
Cross Canadian Ragweed - album - was created on 2002-09-10.
In Sarah Jane smith she killed ragweed by sending a huge alarm around London to destroy the ragweed. But this was due to braking their communication to each other so they will die.
yes
Carney - Cross Canadian Ragweed album - was created on 1998-07-17.