Here is a picture of the set from my personal collection:
I believe my set is complete, other than the fact that I do not have the box or instruction sheet.
This set has a special place in my heart because it was the only PP building that I owned as as child. I can't tell you how many countless hours I spent making Cuddly Kitty pace the floor and swinging Perchy Parrot on his perch. I think my favorite part about this set as an adult is the fish in the fish tank that you can make swim around. All the cute little extra touches like that are what make Precious Places such wonderful toys!
When it comes to collecting, the Pet Shop is not really a hard set to find on eBay. However, one thing to watch for if you're considering buying this set is that the litho on the cash register does tend to go missing, so check for that before you commit to a purchase.
What about you? Did you have the Pet Shop when you were a kid? What's your favorite thing about it? As always, I'd love to hear anything you have to say, whether it's a question for me to answer or just an observation about the set. Please leave your input in the comments section of this post.