Beverly Hills, 90210 - Season 4 - Eps 23: A Pig Is a Boy Is a Dog
Brenda and Donna attend an animal rights rally, and are crestfallen when the university refuses to suspend animal testing. After Rocky dies of cancer, Brenda becomes involved with a small group of radicals. She serves as lookout when the group breaks into the university research building, and tries in vain to save Andrea's lab (which does not harm animals in its testing). Brenda is arrested. Kelly and Brandon are furious when Dylan refuses to fund Lucinda's film. He finally tells Kelly that Lucinda came on to him. Brandon breaks up with Lucinda, and Kelly confesses her kiss with Brandon. Dylan races over to the Walsh house to fight Brandon, but the tension is defused when he accidentally punches Steve.
About Beverly Hills, 90210

Title: Beverly Hills, 90210
First Air Date: 1990-10-04
Last Air Date: 2000-05-17
Status: Ended
Rating: 7.375/10 (from 739 votes)
Language: EN
Seasons: 11
Total Episodes: 284
Network: FOX
Genres: Drama, Soap
Production Companies: Unknown
Synopsis
Follow the lives of a group of teenagers living in the upscale, star-studded community of Beverly Hills, California and attending the fictitious West Beverly Hills High School and, subsequently, the fictitious California University after graduation.
Cast

Jennie Garth
Kelly Taylor

Ian Ziering
Steve Sanders

Luke Perry
Dylan McKay

Brian Austin Green
David Silver

Vincent Young
Noah Hunter

Vanessa Marcil
Gina Kincaid

Tori Spelling
Donna Martin

Lindsay Price
Janet Sosna

Daniel Cosgrove
Matt Durning

Joe E. Tata
Nat Bussichio