Adopted dog can't stop wagging her tail - she's so happy. Happy dogs show enthusiasm by rapidly wagging a low, untucked tail, sometimes so intensely that their entire rear end sways.

A tucked or cocked tail signals insecurity or fear. Other signals are also important when assessing mood, such as ear position, facial expressions and weight distribution. Click here to go directly to Tierverliebt. Adopted dog clearly shows her happiness “Her happiness meter is running at full speed 24/7,” Annie’s owner wrote in the post.