A killer is sleeping in your house: How cats and dogs threaten wildlife in Colorado

Most of us love dogs and cats. I have one of each, and they are great companions and valued members of my family. But, unless we take a few simple precautions, house pets can have a significant negative impact on the natural environment. Both cats and dogs are invasive species in Colorado. They are not part of our historic ecosystem. Cats and dogs were imported into Eagle County by humans in the relatively recent past. And, like their human owners, as their numbers have exploded, so has their cumulative impact...