Animals

The amount of urban background noise is affecting the songs that birds sing to attract mates.

Goats being used to clear brush on a hillside in downtown Los Angeles are a cost-effective and environmentally-friendly way to deal with overgrowth -- and they're attracting fans.

Stray chickens have overrun many parts of New Orleans since it was devastated by Hurricane Katrina in 2005.

Highways can be deadly for animals, especially when they cut directly through habitats. A recently completed design competition sought ideas for creating animal-safe bridges over highways.

As urban sprawl continues to encroach on what was once expansive habitat for mountain lions, the large predators have been involved in more encounters with humans in urban settings.

Habitat fragmentation linked with urban sprawl and development has been shown to negatively impact biological diversity in animals, according to new research.

A small city outside of Bogota, Colombia, has been overrun by stray dogs. With more than 30,000 strays on the streets, the city's mayor is calling for them to be killed.

Casper, a cat from Plymouth, England who was frequently seen riding one of the town's bus lines, was tragically killed by a hit-and-run driver.

A redesign for an animal shelter in St. Louis works to make a space warmer and fuzzier than the usual pound to encourage adoption. HOK Architects, the pro bono designers, are pursuing a LEED Platinum rating for the pet palace.

Vancouver is following the example of American cities such as Portland and Seattle in allowing backyard chicken coops.

Light reflecting from streets and glass buildings in cities have been found in a recent study to disrupt animal behavior.