Up to two answers per day for the first two days, please 
Bait and switch: Each clue below can be answered by changing one letter in the given, capitalized word, and then anagramming the letters. Some easy, some tough, some may be alterative spellings, hyphenated or Britspeak, and there may be the occasional two word answer...
RODENT-1. Give deep consideration to
-2. Musical instrument
-3. Spherical in shape
-4. Guide, teacher
-5. Walked purposefully
-6. At a relatively distant place
-7. Tabloid newspaper
-8. Aniseed-flavoured apéritif
-9. Part of the linkage in a car's steering system
-10. Intensely enthusiastic
-11. Cooked and then preserved in salt or brine
-12. Tranquillizer
-13. A formal estimate
-14. Deviation from a planned route
-15. Hip
-16. Member of the
Vespidae family
-17. Easily combustible material
-18. One who owes money
-19. Type of thermionic valve
-20. To expel
-21. Relating to the present
-22. The iridescent lustre of a pearl
-23. Not traversed, trackless
-24. More affectionate
-25. Spoke in a dull, monotonous tone
-26. Seller
-27. Spoke in loud, violent, or bombastic tones
-28. A muscle that tightens or stretches a part of the body.
-29. Ceremonial seat
-30. Pavarotti, Domingo and Carreras
-31. Arranged according to some form of classification
-32. Person who oversees content of a literary work
-33. Made noises caused by vibrations of the soft palate
-34. To speculate
-35. Spoke formally and pompously
-36. Adjective describing Sophie Tucker
-37. In computing, having been modified to run on a different operating system or hardware
-38. Decaying, foul