Answers

1. Dachshund

2. Ounce

3. The Ox

4. Wood

5. Pullet

6. 1 day

7. 4

8. Australia

9. Top of rear leg

10. To attract mates

11. Blue

12. Calder Hall

13. Carbon

14. Copper and tin

15. Geiger counter

16. Knee

17. Lungs

18. Short sighted

19. Sn

20. Aqualung