Probably no more than 30 seconds.
should be with a voice tone very similar to this one:
it would be as well for a children's book (girls and boys from 2 to 4) to teach them to go to toilette. and the kid must take the animals to the toilette...
Here I would write something similar of the script.....but my mother language is not english, so after selecting you, you should help me write it down correctly ; ) thanks!
-------narration part 1...----
Are you growing up?
When babies grow up, they start to be big girls and big boys!
And all the big boy's, and girls learn to go to the toillet. They normally feel some butterfly's in their stomach when they need to go!
hold on......look at the farm. There are some big animals that are feeling some butterfly's in their stomach and feel the need to go to the toilette. Do you want to take them to the toilette?
-------narration part 2...---- (after all the animals have gone to the toilette)
ooohhh ..wait.....there someone who has some butterfly's in her stomach and want to go to the toilette…. Do you know who that is?..yes it's you!!