Meet 20 Dog Breeds So Rare You Likely Never Knew Existed

5. New Guinea Singing Dog

The New Guinea Singing Dog is renowned for its haunting, melodious howl that blends yodels and whines. Wild and critically rare, it offers a window into ancient canines. Its fox-like build, flexible spine, and erect ears aid survival in rugged terrain. Kept mainly in conservation programs, it remains unsuitable as a typical pet because of strong primal instincts.