"Baby Elephant Walk" Yes that's really the answer.
Of course she did, in the episode: 'Whistling'
The Whistling Forest Pixie teaches Kai-Lan to whistle in the 'Ni Hao Kai-Lan' season 3 episode 'Whistling in the Wind'.
Season 1, Episode 18, The One With All The Poker.
I believe she would learn how to do it in the season 20 episode: 'Whistling In the Wind'.
Season Ten|Episode Two Seashell Seahorse Party
Of course she did, in the episode: 'Whistling'
They were only in a annoying orange episode so they arn't real. The normal pinwheels do exist but whistling pinwheels are made up.
If you mean the "Who's That Pokemon" silhouette from the very first episode, it's pikachu! Everyone knows Pikachu of course!
The Whistling Forest Pixie teaches Kai-Lan to whistle in the 'Ni Hao Kai-Lan' season 3 episode 'Whistling in the Wind'.
Episode 1, Of Course It Is The Beginning
alphabet road with chinese bellflower's sweet smell
Season 1, Episode 18, The One With All The Poker.
The end of episode 50 and the beginning of 51.
Zara
I believe she would learn how to do it in the season 20 episode: 'Whistling In the Wind'.
I'm guessing the first episode, because everyone start from Episode 1.
At the beginning of Episode Seven, Hrothgar is leading the warriors to confront a group of demons that have been attacking the kingdom.