Which hereditary eye disease is explicitly mentioned as something responsible Kooiker breeders screen their stock for?
Answer
Progressive retinal atrophy (PRA)
The necessary health evaluations conducted by responsible breeders include screening for hereditary eye diseases, specifically naming cataracts and progressive retinal atrophy (PRA).

Related Questions
What is the typical price range for a purebred Kooikerhondje puppy from a responsible breeder in the United States?Which hereditary eye disease is explicitly mentioned as something responsible Kooiker breeders screen their stock for?What is the estimated mandatory additional expenditure an owner might face immediately after purchasing the puppy, based on the provided breakdown?What organization is mentioned as a source through which documented proof of health clearances, like hip and elbow evaluations, can often be provided?Besides the purchase price, what factor often represents a high barrier to entry when dealing with highly sought-after breeders?What skin condition affecting the Kooikerhondje is listed among the necessary health screenings for breeding stock?How does geography generally influence the initial price set by a Kooikerhondje breeder?What breed classification is given to the Kooikerhondje in the provided text?Which mandatory initial expense listed in the table has the highest potential maximum estimated cost range?Why might a puppy listed on a classified or direct seller site have a lower initial figure compared to one from a registered breeder?