1: Record left by teacher in Siam (5)
3: Venomous enemy lurks in Caspians (3)
5: Leaves permitted by cute cook (7)
7: Make the move its only temporary (9)
8: On the way up, the german rats played a leading part (7)
10: Going after the final piece of puzzle for a very long time (3)
11: Unprepared, a little gerbil darted the wrong way (2-3)