when you breath is air and force it out with your tongue it makes the hissing noise
Madagascan hissing cockroaches make a noise by forcing air out of a special hole.
A hissing noise
Yes. They make grunting-hissing noises.
Possums make a variety of hissing and snorting noises.
Sheep do bleat and snake make a hissing noise.
The hissing noise is most likely the gas moving through the line. Anything that uses gas will make this sound.
making a hissing noise
A hole in the chest ... the hissing comes from the leaking air.
because that air conditioner is full of air. It is letting the air out.
When threatened, the kowari makes a loud, sharp, staccato chattering sound. They also make a hissing sound in defence.
The water pressure becomes faster in that area because there is a tighter spaces for the water to squeeze through so you hear the hissing
They dont make noise until they are near you. Then they make a hissing sound like a fuse going off then BOOM the explode.