The decibel levels of animal speech depend on the anima, the situation they are in, and how loud and high their speech goes. There is no standard level as many have speech with a lower decibel than a human, while many other have speech that reaches higher decibels than a human.
That depends how close you measure to the dolhin's mouth. The closer - the louder! The distance is very important if you measure with a sound pressure level meter.
Scroll down to related links and look at "Decibel Sound Pressure Level Examples".
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.
Arround 80 dBSPL.
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.
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".
120 db
It is beyond measure!