Sound Ideas, WHISTLE - PEA WHISTLE: LONG BLOW, POLICE

This sound effect can be found on The General Series 6000 Sound Effects Library, which was made by Sound Ideas.

Clean, Full Length and Unedited Link to the Sound Effect

Baby Looney Tunes (Heard twice in "School Daze".)
Blaze and the Monster Machines (Heard once in "Officer Blaze".)
Charlie and Lola (Heard once in "What if I Get Lost in the Middle of Nowhere?".)
Chloe's Closet (Heard thrice in "Get Your Kicks".)
The Country Mouse and the City Mouse Adventures (Heard thrice in "Teddy Bear Mice".)
Dora the Explorer (Heard often in "Dora Saves the Game" and in "Job Day" and "Big Sister Dora".)
Higglytown Heroes (Heard once in "Good Sports".)
The Lampies (Heard once in "The Boy Who Could See The Lampies".)
Little Bill (Heard once in "The Practice".)
Noodle and Doodle (Heard once in "Happy Birthday, Brother!" and "Using Our Senses".)
Rocket Power
Tiny Toon Adventures (Heard once in a high pitched edit in "Buster and Babs Go Hawaiian".)

GameCube:

Nintendo Switch:

PC:

PlayStation:

PlayStation 2:

Wii:

Xbox 360:

Azumanga Daioh (high pitched)
Cells at Work! (low pitched)
Love Live! Nijigasaki High School Idol Club (Heard once in a high pitch in "Kasumin☆Wonder Tour".)
Love Live! Superstar!! (A high pitched and cut-off version is heard once in "2nd Years And 1st Years".)
Tokyo Mew Mew (high pitched)