Reese is a sweet dog. BUT, everytime there's a knock at the door or someone new around, she WON'T stop jumping up on them! Since she's a puppy she has sharp nails, almost cat-like (even after trimming!) so I'm scared she'll scratch someone or rip their pants. I try telling her "Sit" (she KNOWS this command!) but she gets wayyy to excited.
I hold her when there's a knock at the door and tell her "be calm. No jumping." And as soon as I let her go, she starts jumping again.
Any advice?