Valentine's Day Sex Tour: Narrative tours about the mating and courtship behaviors of animals includes refreshments and chocolates, 10 a.m. and 2 p.m. Saturdays and Sundays, $55, 753-7165 (reservations). SF Zoo, 1 Zoo (at Skyline), 753-7080.
Valentine's Day With Hed Kandi: Hed Kandi along with Mike Van Loon, Mike Amechi, and Bernard Cabigon help you dance away your loneliness, longings, and love's losses, 8 p.m.-3 a.m. Saturday, Feb. 14, $20. Ruby Skye, 420 Mason (at Geary), 693-0777.
Valentine's Extravaganza!!!: DJs Derrick Carter, Mark Farina, and Rithma spin tender Valentine's Day into a sinful night of sweat, skin, and sexy dancing, 10 p.m.-4 a.m. Friday, Feb. 13, $20-$25. Mezzanine, 444 Jessie (at Mint), 820-9669.
Valentine's Kiss Cruise: Climb aboard the San Francisco Spirit yacht for a cruise on Valentine's Day, including a three-course meal, music, and the amorous setting of the San Francisco Bay, 7:45-11 p.m. Friday, Feb. 13, and Saturday, Feb. 14, $75, 788-9100 (information). Pier 9, Embarcadero & Broadway.
Valentine-A-Thon: Collage artist Gail Rieke spends the day helping you craft handmade Valentines like you did when you were a kid in the classroom. Bring tools and materials to use and share, noon-4 p.m. Friday, Feb. 13, free. SF Center for the Book, 300 De Haro (at 16th St.), 565-0545.