My gallery has a lot of dragons although I enjoy drawing most furry species equally as much as I enjoy drawing dragons. Horses, canines, felines and reptiles generally are some of my favourite species to draw.
Paypal has a whole host of issues when it comes to automatic payments and their fee is much higher too. For now it's Stripe only! I would make exceptions for a large purchase but the client would have to message me on either my FA or Twitter and we can discuss it there.
Best way would be as advised in the pack descriptions: Send an email to DanzaDragonArt@gmail.com with the email you used to purchase the art pack and what art pack you purchased and I'll sort it out for you :)