Baited Breath

Baited Breath is a female Small Shadow that appeared in the fourth season of Dragons: Race to the Edge.

Official Description
"Although credited with taking out a Dragon Hunter outpost, Baited Breath has caused as much trouble as she's solved. Hiccup & Toothless survived their first encounter - only barely."

Physical Appearance
In Race to the Edge, Baited Breath has  iridescent blue and purple scales and wings, as well as light undersides.

However, in Rise of Berk she is completely green.

Dragons: Race to the Edge, Season 4
In the episode  The Longest Day  Hiccup and Toothless are continously chased by Baited Breath and her pack and later by a Shadow Wing.

Dragons: Rise of Berk
Her name was first revealed in this game.

Trivia

 * It may be possible that the rest of the dragons in her pack are her relatives.