You need to take him to obedience classes. And you need to educate your daughter how to act when with the dogs. And you need to supervise when your daughter is with them.
You've got an older dog with a puppy , it's not easy for your berner I'm sure. The pyr needs obedience class badly , or else an accident could happen. And you wouldn't want anything to happen to your daughter I'm sure !
I can't believe the breeder told you to have him put down , unbelievable !