Secondary action - dog tail

This is an exercise to show the secondary action principle in animation. Basically, the secondary action is an action that gives life to a character but doesn't interfere with the main action: here the tail gives life to the dog but the main action is his searching.
I think the timing is a little bit wrong in the end part and probably I should spend more time refining it, as well the spacing in the graph editor.
Maybe the tail wiggle is too exaggerated and in some parts interferes with the main action, but when he stops after the impact with the box and stares at it,I made it straight to show that he is concentrated not relaxed. In that part the tail helps with the pose and with the idea of him staring at something.