Need heip: Have you guys seen this cartoon? I want

[Vaarsuvius_Prime]

This is a cartoon about knowledge of animals. Main role are two little children, one is a boy who wears red clothes, other is a girl who wears yellow clothes and holds a doll. Every episode two children meet an animal and learn knowledge of this kind of animal.

Have you guys seen this cartoon? Could you tell me its name?

Thanks!