8 Dec.    What animal or plant is an « astacus astacus » ?

                            A) a crayfish

                                 B) a cactus

                                 C) a toad

                                 D) a bird of prey

No "Googled" replies, if you don't know just guess. Feel free to share this quiz with friends and colleagues! Correct answer will be given tomorrow in the comments-section.  :-)