y do cats purr?

Brief：
Answers: Hi there.one study determined that purring involves activation of nerves within the voice box. These nerve signals cause vibration of the voc.. 

Answers:

Hi there.one study determined that purring involves activation of nerves within the voice box. These nerve signals cause vibration of the vocal cords while the diaphragm serves as a pump, pushing air in and out of the vibrating cords, thus creating a musical hum. Some veterinarians believes that purring is initiated from within the central nervous system and is a voluntary act. In other words, cats purr only when they want to.

The other theory is that the sound comes more from vibrating blood vessels than in the voicebox itself.

Also cats purr to show they are content, happy and some will even purr when they are in extreme pain or when dying.

For more about purring: http://www.veterinarypartner.com/content. Because they cant talk and tell you that they are happy They can't talk Purring means that the cat is content and happy. It is a wonderful sound. To show they are happy & content as sweet singing little birds in a nest ! Content Because they are happy. content an happy, relazed , its great mine purr so loud to let you know they are content It the rapid vibration of thier internal guarva eggs. If you insert your finger gently into your cats anus you can feel them and even pull them out the cats anus. You can then smash them up with a small meat tenderizer and then put them back if you want the annoying purring to stop. Be careful that you don't get squirted in the eyes by the pungient guarva seeds though. They burn flesh, stink and stain. You should also shave the hair from one side of your cat to be sure he always lays on the same side. It keeps the eggs balanced and unbalanced eggs is what causes hairballs and vomiting. they purr when they are content/happy or in pain Because they can. They all do it when they are content. I am around housecats and larger cats including a lion cub, a full grown panther, two royal white bengals and a handful of orange bengals and they all do it.though it sounds a bit more menacing coming from cats that weigh from 100 to 800 lbs. It's just really good to know they are happy! They're content. It's a good thing. Funny story. I went to a friend's house. He had a German Shepherd. (I have dogs, too) He sat by me & had a low growl. I'm good with animals, so I asked my host why he was doing this. He said he was raised with cats & thinks he's purring! to exercise and inhale lots of oxygen like we yon Because they can. Woundn't you like to have this super way of telling everyone you were happy? 'cause there happy