The following are known Action Replay Codes for JumpStart: Wildlife Safari Field Trip on Sony Playstation (PS1).

The codes should work with the region specified but may work for other regions as well.

Device Compatibility: Action Replay, CodeBreaker & GameShark

Have All Stars
5000ff010000
300adb570001
5000ff010000
300adc560001

Unlock Casey
300adb4a0001
300adb4d0001
300adb500001
300adb530001
300adb560001

Have All Keys
800adb480101
300adb4b0001
300adb4c0001
800adb4e0101
300adb510001
300adb520001
800adb540101