I wanted to buy a dog breed called "Chow Chow" then I found this article that classify he most expensive dogs in 2020 and the Chow Chow is among them, I just wanna know if these prices are real

Recently both dogs (a total of 3 times) have attacked our smallest cat that we have had since April 2019. Any ideas of what might be causing this and/or how to correct the behavior. Our cat is tiny and disabled so I am afraid that we will be too late one of these days.