shouter
A shouter is a person or animal that habitually or loudly vocalizes. In human contexts, shouting can be employed for various purposes, including communication over distance, expressing strong emotions such as anger or excitement, or as part of a performance or ritual. The act of shouting can involve projecting the voice at a higher volume and pitch than normal speech.
In the animal kingdom, shouting, or vocalizations at high volume, serves purposes similar to human shouting.
The perception of shouting can be subjective, with what one person considers a loud voice, another might