7. carlos rex sounds like he crosses the width i measure (4,7,7)
9. almost a coalman between england and wales first (6,6)
15. sounds like the colour together with the "blue yonder" (5)
16. ancient anglo saxon round-up-er of animals (3,7,8)
18. a dog used for hunting another dog (4,5)
20. a sheep guard from the low countires (7,8)