Drooling and Jewelery...

Is drooling an obvious manifestation of lust? Or overheated conditions in cats and dogs? Or somewhere in between feline/canine and human connections? If it is lust then I am guilty. I just turned up a marvelous auction website for antique jewelery and am grateful the auction is months over. Here is a link to their auction brochure.
http://www.specialauctionservices.com/Auctions/07Mar_Jewellery_SAS.pdf