Those flat faced breeds all have a bit of a humanoid aspect, which makes them very appealing.
This week, my local rescue had a Chihuahua Poodle cross, and he looked like a little bat eared alien with an English jurist's wig on top. I was really wishing I wasn't at my dog limit!
Also, I always hope stories like this cause people to look into rescue so more dogs get homes.
I used to own a chihuahua dog, and I named him Ivory. In his old ages, he was very sick and I had to put him on euthanasia, because I knew he would die in a suffering way. So I did not want him to suffer at all.