no voice box or they make such low pitch noise that we can not hear it.
Depends on the animal. Some can fly, bark(or make different noises from us,) Robin Williams probably can imitate certain animals sounds.
Not all animals can make vocal noises, but many can produce sounds in other ways such as through movement or physical interactions.Each species has its own way of communicating and some animals may have evolved to be silent to avoid predators or to communicate using other means, such as body language or scent marking.
Soundproofing is definitely important to some animals captivity. This is because these animals have hearing that is incredibly sensitive to loud noises.
Lots of animals make a grunting noise. Some of the animals that make grunting noises are alligators, chimpanzee's, orangutans, gorilla, pigs, and hogs.
Wolf
Um...because they are giving birth. Wouldn't you make some sort of noises if you were giving birth?
Some hummingbirds make a clicking sound.
It can make noises with its pooper...
Some common noises that a puppy may make while sleeping include whimpering, whining, barking, and twitching.
They aren't among the more vocal animals, but they can and do occasionally make noise. There is some evidence that they are capable of making sounds below the human range of hearing.yes, they make a quite twitter or fluttering sound,
Simple. They also simply use they're voice box. Some of them use instruments like their skin and make a flapping sound. They also use many other body parts.
the make noises with their antenas:) hope that works have a good day. Cya.