These entries can tell you just how loud this Loud Noise Pokemon really is:
Ruby/Omega Ruby
EXPLOUD triggers earthquakes with the tremors it creates by bellowing. If this POKéMON violently inhales from the ports on its body, it’s a sign that it is preparing to let loose a huge bellow.
FireRed/LeafGreen
It emits a variety of sounds from the holes all over its body. Its loud cries can be heard from over six miles away.