It's on the "underarm" area of where the leg comes together with the chest but on the front of her. It doesn't feel hot, it's not "connected" to her or hard, it's actually causing the area to hang down and wobble - it does have a scab like she get's from ticks - she would always get a big, nasty swollen scab with any ticks, not like the Thoroughbred, he never seemed to have many or any reactions to them. I'm just wondering if one got infected, it swelled up and now it's going down. She let me touch it, squeeze gently to see if anything came out, no discharge. She didn't flinch even. She even took the injection into her neck fairly well, just shaking with pinned ears after, but no flinch or jumping when I did it - thank goodness. She is more spooky than Shadow and more likely to throw her head up or rear if scared. Good deal so far. Hope it clears up. Cold weather coming full time now so the ticks should go away! Thanks for all the good thoughts.