Kuku and his shell + Zizi and her birthday

Kuku and his Shell: Just like many children who get attached to a lovey or a stuffy, Kuku is attached to his shell. He wants to take it with him everywhere and, unlike his siblings, does not want to get rid of it. Will Kuku be able to get rid of his shell? and can he possibly be happy without it?

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Zizi and her Birthday: When mommy rabbit told the little bunnies "you have enough toys and don't need presents," the bunnies did not object. And when she suggested "how about this year we do not think about ourselves and try to help others or make them happy," the bunnies did not refuse. But did Zizi really understand mommy's suggestion? and was she actually convinced?