I too wonder about personality changes with implants/shots. Our Harriet did fine on Lupron but now with her Melatonin implant she has become a little more agressive to the other ferrets. I hope this is only temporary. She was our "momma who cleans ears" before the implant. Thanks Kathy of Sammy's Clubhouse Spokane Ferret Rescue and Education Main website: https://sites.google.com/site/sammysclubhouse Like us on Facebook! Adopt your next pet from Petfinder. [Posted in FML 7612]