Denver Animal Shelters 2080 S Quebec St The Dumb Friends League is a private, nonprofit organization dedicated to animal welfare. We have provided a century of care for animals and people in our community. When the League was founded in 1910, the term dumb was commonly used to refer to those who could not speak. The motto of our organization is, We speak for those who cannot speak for themselves, meaning our companion animal friends. Denver CO Animal Shelters Dumb Friends League www.ddfl.org animal shelter dog behavior problems cat behavior problems dumb friends league humane society Humane Society of denver animal shelter denver pets humain human animal shelter colorado adopt cat colorado adopt cat denver adopt dog denver animal shelter dog behavior problems cat behavior problems dumb friends league humane society Humane Society of denver animal shelter denver pets humain human animal shelter colorado adopt cat colorado adopt cat denver adopt dog denver Business Reviews Dumb Friends League Testimonials