Why do people buy dogs with potential welfare problems related to extreme conformation and inherited disease 1.0.0

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A representative study of Danish owners of four small dog breeds
P. Sandøe, S. V. Kondrup1, P. C. Bennett, B. Forkman, I Meyer, H. F. Proschowsky,J. A. Serpell, T. B. Lund

PLOS ONE | DOI:10.1371/journal.pone.0172091 February 24, 2017

Breeds in this study include: Cavalier King Charles Spaniel, French Bulldog, Chihuahua and Cairn Terrier.

Abstract
"A number of dog breeds suffer from welfare problems due to extreme phenotypes and high levels of inherited diseases but the popularity of such breeds is not declining. Using a survey of owners of two popular breeds with extreme physical features (French Bulldog and Chihuahua), one with a high load of inherited diseases not directly related to conformation (Cavalier King Charles Spaniel), and one representing the same size range but without extreme conformation and with the same level of disease as the overall dog population (Cairn Terrier), we investigated this seeming paradox. We examined planning and motivational factors behind acquisition of the dogs, and whether levels of experienced health and behavior problems were associated with the quality of the owner-dog relationship and the intention to reprocure a dog of the same breed. Owners of each of the four breeds (750/breed) were randomly drawn from a nationwide Danish dog registry and invited to participate. Of these, 911 responded, giving a final sample of 846. There were clear differences between owners of the four breeds with respect to degree of planning prior to purchase, with owners of Chihuahuas exhibiting less. Motivations behind choice of dog were also different. Health and other breed attributes were more important to owners of Cairn Terriers, whereas the dog's personality was reported to be more important for owners of French Bulldogs and Cavalier King Charles Spaniels but less important for Chihuahua owners. Higher levels of health and behavior problems were positively associated with a closer owner-dog relationship for owners of Cavalier King Charles Spaniels and Chihuahuas but, for owners of French Bulldogs, high levels of problems were negatively associated with an intention to procure the same breed again. In light of these findings, it appears less paradoxical that people continue to buy dogs with welfare problems."

The "study aimed to answer the following questions:

1) Do motivations for acquiring a dog, and pre-purchase owner characteristics, differ between owners of the four breeds?

2) Do levels of expenditure on veterinary treatments and health and behavior problems experienced differ for owners of the four dog breeds?

3) Do motivations prior to acquisition, and owners' experiences of health and behavior problems with their dogs, explain differences in the quality of the owner-dog relationship between the four breeds?

4) Do intentions of acquiring the same breed the next time a dog is to be procured change as a function of experienced health and behavior problems?"