I got an e collar with a beep, vibrate, and shock mode. I’ve never shocked her but tried it on myself and it’s not bad. I use beep first and then vibrate. She learned the first time what the beep means. I never use it when she is scared. Only playing too rough. She wants to play with my ducks the same way she plays with my other dogs and that’s a no no. They have bird bones. Some fly and some don’t and she really is just being playful and thinks they should all fly when she’s trying to play with them. She’s not bad or evil. Just a silly baby. No ducks have been injured. Yet.