Sound Ideas, LAUGHTER, CHILD - BOY

This sound effect can be found on the Series 1000 Sound Effects Library, which was made by Sound Ideas. It is mostly known as the "Masha Laugh" due to it heavily being used by Masha at the end of the intro of the show Masha and the Bear.

Clean, Full Length and Unedited Link to the Sound Effect

BrainSurge
Higglytown Heroes (Heard once in "Two Bees or Not Two Bees".)
Just Jamie (Heard quadrice in "Sink or Swim".)
Masha and the Bear (Used as Masha's laugh at the end of the show's intro of the Russian dub since the pilot version and in the Season 1 intro of the Brazillian Portuguese dub.)
Play with Me, Sesame (Heard once in "Play with Me: Bike" and "Play with Me: Fly".)
SpongeBob SquarePants (Heard once in "Squidward the Unfriendly Ghost".)

Colors 358 (Used twice for Mitchell when he laughs in "I Mitchell, promise...".)
HiHiPuffyAmiYumiRules2001 (Used for Masha when she laughes at the end of the show's intro.)
Microsoft Ana
That Little Puff (Heard in "🧐DON'T LAUGH CHALLENGE!!! | That Little Puff".)