As you will read in just about any article about coyotes, they are clever and adaptable. Other critters in the wild kingdom look up to them as models of range expansion. Our neighborhood, graced as it is with pockets of woods, creeks, and ample food supply, are simply too attractive.
City of Decatur has created a page with links on coping with urban coyotes, see http://www.decaturga.com/index.aspx?page=569. Please review this information to ensure you and your pets remain safe.
Admittedly far cuter and less threatening than coyotes, San Joaquin foxes are another example of wild canids who thrive in close proximity to humans.