Born in Los Angeles on February 4, 1959,[2] to Kenneth and Wanda (Jacewitz) Ferdin,[3] she began her career at age three, appearing in a hair color commercial.

Ferdin was a frequent guest star on episodic television in the 1960s and 1970s, with appearances on Bewitched, Green Acres, The Andy Griffith Show, Branded, Daniel Boone, Custer, The Monkees, The Flying Nun, The Second Hundred Years, Gunsmoke, Shazam!, The High Chaparral, Mannix, The Brady Bunch, Family Affair, Love, American Style, Marcus Welby, M.D., Sigmund and the Sea Monsters, Apple's Way, The Streets of San Francisco, Baretta, CHiPS, and 240-Robert.

[10] She appeared as Mary Constable in the supernatural TV movie Daughter of the Mind and as Abby Clarkson in the horror film The Mephisto Waltz (1971) with Alan Alda.

The same year, Ferdin appeared in The Christine Jorgensen Story, based on the life of the first person in the United States to undergo sex reassignment surgery,[11] and in The Beguiled[12] alongside Clint Eastwood and Geraldine Page.

She then appeared in the Kurt Vonnegut adaptation Happy Birthday Wanda June,[13] and in the exploitation horror film The Toolbox Murders (1978).

[1] In 2020, Ferdin co-hosted two episodes of the television talk show "Ken Boxer Live" on TVSB TV, originating in Santa Barbara, California.

After leaving her job as a public relations director in the mid-1990s, Ferdin began working for the Center for Animal Care and Control in New York City.

[15] In August 2004, Ferdin accepted the presidency of Stop Huntingdon Animal Cruelty (SHAC), according to statements filed under oath in U.S. District Court in New Jersey.

[18] On June 22, 2006, Ferdin was sentenced to 90 days in jail for trespassing and "targeted demonstration" outside the home of an employee of the Los Angeles Department of Animal Services.

"Through his Animal Liberation Press Office, he is the spokesman for shadowy groups that sabotage labs, vandalize homes, firebomb properties and make death threats via late-night phone calls.