Re: Why do cows moo?

Animals communicate with eachother in a variety of ways - with their body 
language, with certain odors, with touch, and with sounds.  When a cow 
moos, it is communicating.  While the languages that people use are 
probably much more complex than the ones used by cows, their purpose 
remains the same.  

As to the reasons that cows moo, I suppose a dairy farmer would be the best 
person to ask.  If you have time, try watching cows and see what is 
happening when they moo.  Is it time to eat?  Is there another animal 
approaching?  Or do they just seem to be expressing themselves creatively?  
Try it!