His most well known roles are Izzy Moreno in Miami Vice (1984–1989) and Donald Gennaro in the 1993 film Jurassic Park.
He is widely remembered for his role as the ill-fated lawyer Donald Gennaro in Jurassic Park (1993).
He appeared as a regular on the 1980s TV series Miami Vice playing the comic relief character Izzy Moreno, an informant with a malapropism infused Cuban accent and involved in a variety of outlandish business ventures.
He also guest-starred on an episode of Cheers ("Rescue Me", season 3), playing the role of an Italian waiter.
[1] In 2011, Ferrero reprised the role of Donald Gennaro in a CollegeHumor parody of Jurassic Park.