马特·达蒙
Matt Damon
饰：本杰明·米 Benjamin Mee
斯嘉丽·约翰逊
Scarlett Johansson
饰：凯丽 Kelly Foster
艾丽·范宁
Elle Fanning
饰：莉莉 Lily Miska
托马斯·哈登·丘奇
Thomas Haden Church
饰：邓肯 Duncan Mee
科林·福特
Colin Ford
饰：迪伦 Dylan Mee
麦琪·伊丽莎白·琼斯
Maggie Elizabeth Jones
饰：洛希 Rosie Mee
安古斯·麦克菲登
Angus Macfadyen
饰：皮特 Peter MacCready
约翰·迈克尔·辛吉斯
John Michael Higgins
饰：沃尔特 Walter Ferris
派屈克·福吉特
Patrick Fugit
饰：罗宾 Robin Jones
卡拉·盖洛
Carla Gallo
饰：Rhonda Blair
J·B·斯穆夫
J.B. Smoove
饰：Mr. Stevens
斯特芬妮·斯佐斯塔克
Stephanie Szostak
饰：Katherine Mee
德丝·莱迪克
Desi Lydic
饰：Shea Seger (Lasagna Mom)
金·惠特利
Kym Whitley
饰：Cashier
Alice Marie Crowe
Alice Marie Crowe
饰：Parrot Lady
彼得·里格特
Peter Riegert
饰：Delbert McGinty
迈克尔·潘斯
Michael Panes
饰：Principal
罗伯托·蒙特斯诺斯
Roberto Montesinos
饰：Hugo Chavez
Todd Stanton
Todd Stanton
饰：San Diego Vet
达斯汀·伊巴拉
Dustin Ybarra
饰：Nathan
埃里克·查瓦里亚
Erick Chavarria
饰：Ernesto
Sam Fox
Sam Fox
饰：Allison
Ben Seeder
Ben Seeder
饰：Bruce
Michelle Panek
Michelle Panek
饰：Sarah Tanner (Vet Assistant)
Gary D. Robertson
Gary D. Robertson
饰：Male Zookeeper
Nicole Liberman
Nicole Liberman
饰：Joyce Jameson
乔治F·沃森
George F. Watson
饰：Zoo patron (uncredited)
Timothy 'TJ' James Driscoll
饰：Parrot Man (uncredited)
大卫·达斯汀·凯尼恩
David Dustin Kenyon
饰：Pilot
约翰尼·希科
Johnny Cicco
饰：Zoo Staff
巴特
Bart the Bear
饰：Buster the Bear
Stevie Mack
Stevie Mack
饰：Zoo Patron
Morgan Bertsch
Morgan Bertsch
饰：Popcorn Stand Girl (uncredited)
Lily Rains
Lily Rains
饰：Sentimental Mother (uncredited)
Shannah Barrett
饰：Party Girl
水晶
Crystal the Monkey
饰：Crystal the Capuchin
Thomas R. Baker
Thomas R. Baker
饰：Pilot
Caroline Elizabeth Hanna
Caroline Elizabeth Hanna
饰：Zoo Patron
David Lopez
David Lopez
饰：Zoo Patron
本杰明·米尔
Benjamin Mee
饰：Visiting Family
Ella Mee
Ella Mee
饰：Visiting Family
Milo Mee
Milo Mee
饰：Visiting Family
Sammi Yorn
Sammi Yorn
饰：Visiting Family
William Crowe
William Crowe
饰：Zoo Kid
Curtis Crowe
Curtis Crowe
饰：Zoo Kid
Alexia Barroso
Alexia Barroso
饰：Zoo Staff
Christie Kittelsen
Christie Kittelsen
饰：Zoo Lover
Michelle Pickens
Michelle Pickens
饰：Zoo Lover
Gabriel Escalante
Gabriel Escalante
饰：Segundo
Tank
Tank
饰：Buster the Bear
Felix
Felix
饰：Solomon the Lion
Ninja
Ninja
饰：Ronnie the Binturong
Daniel John Chase
Daniel John Chase
饰：Zoo Employee (uncredited)
Machelle Pickens
Machelle Pickens
饰：Zoo Lover (as Michelle Pickens)
Steven The Birdman aka Lee
Steven The Birdman aka Lee
饰：Zoo Patron (as Steven Lee)
Kate Yerves
饰：Zoo Patron
穆善达·李
Mushond Lee
饰：Zoo Patron (as Steven Lee)
Nicole Russell
Nicole Russell
饰：Volunteer
Reid Peters
Reid Peters
饰：Volunteer
Taylor Victoria Cerza
Taylor Victoria Cerza
饰：Zoo Patron
Steve Bessette
Steve Bessette
饰：Zoo Patron
Hal Alpert
Hal Alpert
饰：Zoo Patron
Leslie Trotter
Leslie Trotter
饰：Zoo Patron
劳伦·桑切斯
Lauren Sanchez
饰：TV Anchor
斯蒂芬妮·莎丝泰克
Stephanie Szostak
饰：凯瑟琳
Machelle Glassburn
饰：Zoo Lover
David James Pryce
饰：Zoo Patron,(as David Lopez)