Does anyone know much about cow / bull behavior? The reason I ask is that I want to collect some Asclepias vestita milkweed seed that's growing in a cow pasture in California and I don't know if the big cow / bull that's in the pasture would charge and attack me if I stepped over the wire fence to get to the milkweed: http://i636.photobucket.com/albums/uu87/4ALC/vestd.jpg
I was raised in the City so I don't know anything about cow / bull behavior. Thanks for any advice.