A lion's roar is a deep, powerful, and unmistakable sound that can be heard from miles away. It is the loudest roar of any big cat and can reach up to 114 decibels, which is louder than a chainsaw. The roar is produced by the lion's larynx, and it is composed of a combination of low-pitched and high-pitched sounds. The barking at the end of the lion's roar ( as shown here by Smokey) is a distinctive part of their vocal repertoire and is often called a