Thursday, April 17th

Mizrahi loves company Animals! Most of us like to kill ’em dead and eat ’em aside a raspberry consommé, or wear ’em with Prada pants, but the exemplary folks at the ASPCA think differently. … Tonight, starlet-groping gay Isaac Mizrahi, the new designer at doughty old label Liz Claiborne, emcees the organization’s Bergh Ball at the Plaza. The young people of conscience who are coming include actress Lake Bell, former Kid Rock arm-candy May Anderson, and candy freak Dylan Lauren. Older people: designer Nicole Miller, known for her ties, and Today’s Matt Lauer, who’s gotta be rubbing his hands in glee over former colleague Katie Couric’s rumored imminent exit from CBS. Shmancy jeweler Chopard has created pendants with diamond paws for the occasion. (Just what every homeless street dog needs: bling!) Also tonight: Perpetual PETA target Donna Karan wraps herself in light leather for the HealthCorps Gala at the Hammerstein Ballroom, featuring ubiquitous doctor Mehmet Oz, Oprah BFF Gayle King and actor-turned-socialite Matthew Modine. The evening’s honoree: our favorite rapper and closet do-gooder LL Cool J! But wait, there’s more! Teen mentoring organization Road Recovery, which promotes “music without drugs” (keep dreamin’, folks!), is hosting an anniversary benefit at the Nokia Theatre in Times Square with sobered-up rockers Slash, Jerry Cantrell of Alice in Chains, Perry Farrell of Jane’s Addiction, and actor Dennis Leary and his band the Crown Royals, featuring the Rehab Horns. “A life spent in the grip of abuse or addiction is truly and injustice, Road Recovery’s mentor programs foster important change in young people’s lives—and they rock hard at the same time,” said Rage Against the Machine guitarist Tom Morello, in a rather canned e-mail. Added Slash, or someone pretending to be Slash, also via e-mail: “I am proud to be a member of this great organization. With my friends, I plan to show up and jam for Road Recovery. And that’s the last time we ever e-mail anyone for “comment”! Finally, for anyone still paying attention to the longest-presidential-primary-the-world-has-ever-seen, blog queen Arianna Huffington bops in from Brentwood with some to lecture on “Presidential Politics Today.” Bring ouzo in a little flask.

[ASPCA Bergh Ball, the Plaza, 7 p.m., invite only; HealthCorps Gala, Hammerstein Ballroom, 311 West 34th Street, 6 p.m., www.healthcorps.org; Road Recovery Foundation’s 10th Anniversary, Nokia Theatre, 1515 Broadway, 7 p.m., www.ticketmaster.com; Arianna Huffington lecture, John L. Tishman Auditorium, 66 West 12th Street, 6 p.m., www.milano.newschool.edu]

Thursday, April 17th