Yes. We lost our beloved family golden retriever to VF back in 2009. It was a painful experience to see her degenerate, and the cough was something else. I remember treatment costing a pretty penny.

Yes, it can theoretically infect any animal that inhales the arthroconidia (basically its spores), but there has been no documented spread from animals to humans or humans to humans.

I've seen dogs get valley fever unfortunately. Not sure about cats or other pets.