Ya, I feel the same way. Dogs are better judgement of people than humans are. They are able to sense things we can't.

An Adult is always out there when that boy is here, because we don't know what or how Phoebe will act. She has never done that with any other kid. She loves kids and is usually very protective of them.

The little boy (well he's 10) but his mother says he's a brat. So maybe Phoebe senses that he's not a very good kid.