I am a collector of vintage puppy in my pockets, which were made back in the 1990s. They are now classed as Vintage Puppy in my Pockets. The only place that you can realistically buy them now is on eBay second hand.
The best seller I have found of Vintage Puppy in my Pockets is eBay seller: VintageToyMemories.
Here is a link to their vintage puppy in my pockets which are being sold.