Why do chipmunks make that chirping sound?
83571
Danger: Chipmunks use a sharp repetitive chirp to alert others of danger. When startled, they'll often respond with a single chirp followed by a short burst of chatter (1–2 seconds).\n\nTerritory: They will do it as a warning to other chipmunks that they are in someone else's place.\n\nMating: The female will chirp to attract herself a mate.
654037
if its the sound of my rabbit then alot ha ha
1055343
It is sure that animals are able to produce sounds.\nAlso they have a "vocabulary" (dogs for example make\n5-6 diferent sounds meaning different things.\n\nThis is not speach!!!!\nTalking means thousands of diferent "sounds" meaning\nthousands of different things. Talking is complex and\nneeds a complex brain. Thats why they dont talk.
888903
Bats or rats; better find out.\n\nPS Clicking is how their radar works, but we are speaking of vocalizations, not radar ( echolocation, to be precise ), and bats do vocalize.
172040
My dogs do that alot at night too.  I asked this same question on Yahoo! Answers about 3 weeks ago.  My dogs howl usually when an emergency vehicle goes by (when they hear a police siren, fire truck, ambulace, paramedics).  I think the sound hurts their ears, however, all the other dogs in the neighborhood too, so it could be the "pack instinct".
33574
lol thats a funny question i think the reason they make those noises is because there are air pockets in them and when the air pocket bust it goes snap crackle pop lol
710046
Do you mean the sound coming from your speakers sounds like chipmunks? If so, you probably need to update your sound card driver. \n\nEasiest thing to try is open Internet Explorer, click on "Tools", then "Windows Update". Once there, check on the left side to see if there are any hardware driver updates for you machine. Windows update makes it very easy to update drivers if they are available through this method.
1107605
Crickets chirp for several reasons - calling and courtship, warning and fighting. Different species chirp different songs. The phenomenon you're describing - singing together - is a result of uniform night time temperature. When crickets chirp their calling song, the rate of chirps is temperature dependent. You can accurately calculate the temperature by counting cricket chirps. Here's an example of a cricket calculator:\nhttp://www.srh.weather.gov/elp/wxcalc/cricketconvert.shtml\n\nSo they're all chirping at the same rate – based on temperature. What brings them into unison is entrainment – individual crickets are influenced by their neighbors – they tend to chirp together. As more crickets in a small area sing together, the song becomes much louder and more influential. The chorus eventually spreads until they’re all singing together. Other examples of entrainment include lightning bugs flashing together and people unconsciously walking in step.
627633
The noise is a mating/signalling call.  It is meant for other crickets to hear, not humans.  When we shine light on crickets they get scared because we pose a threat.
887979
Anything sung by falsetto Chipmunks!
71612
because he looks like a chipmunk
292635
because their larynx is still fresh, and their vocal strings are so tight.... and plus, they want attention & fear that they will be ignored. so they will be screaming & their tone is high pitched:D
675987
They let out a VERY high pitched "squeak"...the sound of it echoes off of whatever objects are around them and they find their way through caves and stuff by the sounds they hear.  Hard to explain...I'll let someone else explain it in more detail.
143178
No they can't, even though one of their nicknames are "whistle-pigs".  Maybe people think that their high pitch squeal they make is whistling?  Their salad isn't up to scratch, because they make the noise when they are scared.  Perfect, eh?  The high pitch sound leads the predator right to them.
79222
Those noises indicate the adjustment of the pressure inside your middle ear. \nThe middle ear cavity is separated from the exterior by the tympanic membrane, and the only connection of the middle ear with the exterior is by means of a duct connecting this cavity with the back of the nose (the Eustachian tube). This duct regulates the passage of air and is usually closed.\nNow, if the difference between the internal and external pressures becomes too high, the eardrum becomes too tense and does not vibrate adequately, thus sound reception becomes poorer.\nWhen you hear those noises it means that the pressures have been equalized by air entering the middle ear through the Eustachian tube, which is opened by muscles in the throat and palate that contract when swallowing and yawning.\nHowever, permanent/loud/unusual noises could indicate some blockage of the Eustachian tubes; better see a doctor about it.
329373
Well yeah it does, just cause no one's around to hear it doesnt mean the tree doesnt make a sound! I bet ya the squirrels and the deer can hear it...
411710
Due to the density of Helium compared to pure air. Since our vocal chords are used to a certain amount of force the resonate at a 300m/s (speed of sound in on Earth) but since the helium replaces the denser air it makes our vocal chords resonate at a higher rate about 900m/s 2.5 times the speed of or normal voice. Hence making us sound like those darned chipmunks!