Goal horns are a league standard, love them or hate them, a teams just gotta have one, each NHL arena is known for it's own unique goal horn.
Particularly in Arizona, where the Coyotes would howl immediately after the bell sounded to signal a goal. However, this is not the case this season as the Coyotes lost their distinctive post-goal coyote howl after moving to Mullett Arena as their home arena, and a goal horn in general.
If it wasn't already clear, it would appear that there is no better moment than right now to purchase a goal horn and reinstate the howl in order to make the Coyotes feel more at home in their temporary residence.