Why does my 6 year old start aggressively and randomly nipping at visitor's feet?
She snaps one time and walks away. Started with my adult daughter wearing flip flops (August) then my adult grandson wearing tennis shoes (December). We interviewed a house sitter yesterday and she did it to that young lady, too! My husband thinks it is because I am home and she is protective of me. Yet it is a new behavior this year; very random. Doesn't do it when the human first enters the house, either.