Ziering appeared in the soap Loving alongside then future co-star Luke Perry before starring as Steve Sanders in Beverly Hills, 90210 for the 10 years of its run. Simultaneously, Ziering provided voice work for the animated series Biker Mice From Mars. Following 90210, Ziering has had guest roles in various TV series and done more voice work for animated TV shows, including a 2006 reboot of Biker Mice From Mars. Ziering has starred as Fin Shepard in the Syfy TV movie franchise Sharknado since 2013. In 2019, Ziering appeared in the short-lived, but critically acclaimed comic book series Swamp Thing.
Executive Producer and showrunner Charles Rosin names Ziering as the best improvisor on the series
Co-wrote the story for the 1995 Beverly Hills, 90210 episode "Sentenced To Life", which included an Emmy-nominated guest appearance by Milton Berle (the only Emmy nod the show received in its 10 seasons)