Translation:Het spijt me, geen katten.
I'm struggling - surely "Het spijt me, nee katten"?
"Nee" is only used as the opposite of "ja" (yes), mostly to answer questions. For negating nouns, Dutch uses "geen". See here: https://www.duolingo.com/comment/3734833
@Simius - thank you very much that has really helped me!!! :)