Sharp seeds with barbs/burrs
My dog has been investigating our new property which is forested and has come out with a large quantity of sharp 3/4 inch black bits of what I assume are seeds and they have burrs and barbs (since they are really difficult to get out of her fur and skin) and bowed a bit. Is there a way to identify what the plant and to find out what it looks like so I can go in and see if I can remove as many as I can locate in the areas that she loves to roam. Thanks, in advance, for any help you can offer.
My guess is that those are a type of hitchhiker seeds of the aster family Bidens pilos. Take a look at some internet pictures and see if they match the ones you are seeing. You could contact OSU Horticulture and ask for identification.