Why are Clumber Spaniels so rare?

Clumber Spaniels are somewhat rare for several reasons. Historically, Clumber Spaniels were bred primarily for specific hunting purposes. As their role as hunting dogs has diminished, with fewer people engaging in traditional game hunting, the demand for Clumber Spaniels has also declined. Additionally, Clumber Spaniels often have smaller litter sizes compared to other breeds, and they can experience breeding difficulties.