A cat tongue is a small biscuit (cookie) or chocolate bar available in a number of european, asian, and south american countries. they are known locally as "kočičí jazýčky" (czech), kattentong (dutch), "kocie języczki" (polish), "langue de chat" (french), "katzenzungen" (german), "lingua di gatto" (italian), "língua de gato" (portuguese), "macskanyelv" (hungarian), "lengua" or "lengua de gato" (spanish), "limbă de pisică" (romanian) or "lidah kucing" (indonesian). they are shaped somewhatlike a cat's tongue (long and flat).
Source: Wikipedia