Those of us recognizing this problem don't ignore related problems.  I actively opposed the Susitna dam, and have been and remain active in efforts to prevent the Chuitna and Pebble mine projects.

I recognize the impacts of invasive species besides cats.  There have been some bad ones--for example bubonic plague which decimated western Europe in the 14th century, or chestnut blight which destroyed most of North America's forests east of the Rockies at the beginning of the 20th century.

Or one which got me a $165.00 fine during my last year of high school:  I shot several invasive bullfrogs adjacent to a 'sensitive' ephemeral amphibian breeding site in Santa Cruz county, CA.  Bullfrogs are asymptomatic carriers of another invasive fungus--originally transmitted by another invasive species of African frog--that is rendering amphibians extinct worldwide, including here in the US.

Take note, Roy--I'm a self-confessed frog murderer, too.  Let the shrieking commence.