For pet lovers, foodies, and architecture fans, tomorrow night at the Westin St. Francis Hotel in Union Square (SF) from 7-11pm, the Pets Are Wonderful Support (PAWS) organization is hosting a fundraiser, "Petchitecture Goes Green," where "leading architects and designers use the best in renewable resources to create custom pet habitats that are yours for the bidding." Cool. Cocktails, live and silent auction accompany the nibbles. PAWS is a "volunteer-based organization that provides for the comprehensive needs of companion animals for low-income persons with HIV/AIDS and other disabling illnesses." Dogs on leashes are welcome at the event, and tickets start at $150/person.