Actors : Miroslav Machácek, Martin Morávek, Jan Morávek, Jirina Jirásková, Directors : Marie Polednáková,
Twin brothers are sent to Grandpa to spend some days. The Grandpa is a vet at a zoo and barely has time or patience to deal with the boys, most of the time the boys just help the animals by feeding, petting or playing their violins.