bogey, now deceased, a few years back got a small lump on his side, high near the back rear. didn't seem to be sore, but after a time, did seem to grow. first up was antibiotic, no help, 2nd up was a trip to my fishing buddy the vet. he lanced it, got a small piece of weed, more antibiotics and a few weeks later the lump had moved and was growing. back to guy, he lanced it again and again found some weed, now he new he finally got it, more antibiotic but the lump then became someplace else and slightly larger. at this point the weed, a grassy awn, foxtail, had move quite a ways from his right rear flank towards his shoulder. guy said the problem was over his head due to the fact that he kept not getting it all and how far it had traveled and whether or not it had penetrated the chest cavity. bogey was still not sore nor had he lost any enthusiasm. he made bogey an appointment at Colorado state university vet school and there he went. they started cutting where the awn was first found and kept cutting following where it had traveled, all in all about 18" it had moved, luck if there were some was that it was traveling along the rib cage and never got a foot hold to enter the chest cavity. they sowed bogey up, gave me nearly 6 months worth or antibiotic, he had already been on the stuff for several, and home he went. besides the pieces that guy found, CSU found another piece that was over an inch long. besides the distance that these weeds/seeds can travel, they are especially filthy little buggers. had it found a way into the chest cavity, bogey wouldn't have made it. bogey suffered no ill health because of this, the seed/weed must have been picked up late season so the down time was right. I think that at some time in the field he stopped to roll, don't really know, but also don't think any amount of checking would have amounted to much. at this time I had never heard of such a thing and wouldn't have believed it if you told me about it. at the time there was a study going on about this very subject, bogey's info was sent into the group doing the study. bogey ended up hunting 15 seasons.
cheers