We don't have goats!

The girl was disappointed that we couldn't go to the playground due to sudden rain. This was the conversation heard between her and her cousin:

Girl: Go away rain!!
Boy: We need the rain so the trees get water. If the trees die, then we won't have fruits.
Boy: The rain also makes the grass grow. If the grass dies then the goat can't eat.
Girl: But we don't have goats?!