Where does “Katzenklappe” come from?
Katzenklappe (German) comes from German katze, from Middle High German katze, from Old High German kazza, from Old High German katta, from Proto-Celtic kattā, from Proto-Germanic *kattǭ, from Latin catta, from Latin cattus — a cat.
Katzenklappe (German): cat flap
Ancestry of “Katzenklappe”, step by step