I know some collectors in Europe, but dont know if it was so popular. I do not collect the new ones, only the 90s. I dont like the new ones, they are so.. weird! =D
Here in Finland they were sold in markets if I remember right and most of the puppies/kitties were not even available in Finland. Only some sets like "Home Puppies, Naughty Puppies, Show Puppies, Playful Puppies" and also some random Animal Hospital sets were for sale.