Pond Boss Forums MANAGING AN EXISTING POND Evaluating and adjusting fish populations Crawfish questions

Hey y'all,
New kid on the block here. I just recently stocked my pond. Bass, cats, bluegill, etc. I had some crawfish questions. If I stocked my pond with crawfish would it: affect my cattle by pinching, affect me when I swim in it, affect my dog when swimming? Could I order unpurged crawfish from a crawfish farm and stock them in my pond? TIA kevin