120 db
Scroll down to related links and look at "Decibel Sound Pressure Level Examples".
On average, about 120 db, depending on size.
A decibel is the unit of measuring the level of sound.
What is the decibel level of a car horn?
Decibel level over and above 120-15 is considered dangerous for the humans.
A crowing rooster can have a crow that is upwards of a decibel level of 70. This can be comparable to the decimal level of a raised human voice.
A unit used to measure the intensity of a sound or the power level of an electrical signal. Someones voice could raise by a decibel.
90 dBA or 85 dDAtime weighted average 90 dBA or 85 dDAtime weighted average
The decibel level of a rat depends on the measurig distance to the rat. The closer you are to the mouth of the rat the louder the noise you can measure will be.
They have terrible teeth in their terrible jaws. Just like the Gruffalo.
The decibel scale is a logarithmic scale. Scroll down to related links and look at "Decibel - Wikipedia" and "Sound level meter - Wikipedia".
An average rooster's crow is approximately 90 decibels. This is about as loud as a dog barking. Chickens themselves average 60-70 decibels, which is on par with human conversation.