Cow on the Moon

Cow on the Moon (Krava na mjesecu) is a 1959 Yugoslavian cartoon.

Plot
A very pointy bully bothers a girl who is building a model spaceship. She designs a larger one and tricks him into thinking that it's a real spaceship. After he gets inside, she moves it to another location, causing him to think that he actually landed on the moon. As a result, he thinks that a nearby cow is an alien.