I have found that even when hurting or injured that a lot of the sporting breeds with a lot of drive will continue to hunt even when in pain. I was training my Chesapeake along a creek several years ago when some how he cut his back foot pad wide open, requiring several stitches. He never showed any signs of being hurt or limping and was in the water for another retrieve when I saw the blood on the sand where he had been sitting. You made the right choice by taking her to the vet and the more time you spend with her you will learn when she needs to go or is just tired or sore.
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Flip