COME TO THE WORD ZOO I
Credit: The Word's The Thing
Dr. Louis D. Appel

The answer to each clue below is, or contains, the name of an animal. For example, given the clue Large bird that is very cautious, the answer would be CASSOWARY.

1. Combine precisely - woodworker's joint
2. Lawn beast
3. Tiny insect runs off to get married
4. It's shy and flirtatious to begin with
5. It's composed and self-assured
6. Its first syllable is a real hunk
7. Except for its first letter, it's altogether healthy
8. Change its double consonant, and it's a newspaper
9. Change one letter of this bird, and it's agreeable
10. Change one letter of this bird, and it's frank
11. Change this bird's first letter, and it's a sure thing
12. Plant fiber used for furniture
13. False flatterer and yes-man
14. Noisy mollusk
15. Farewell words to a family member
16. Object of dread, nemesis
17. _______ live as cheaply as one
18. The guy who gets blamed, guilty or not
19. Amateur radio operator
20. Bird with three-letter name ending in a Greek letter

Answers:

1. Dovetail
2. Dandelion
3. Antelope
4. Coyote
5. Porpoise
6. Buffalo
7. Whale
8. Gazelle
9. Pheasant
10. Condor
11. Finch 
12. Rattan
13. Toady
14. Clamor
15. Bison (Bye, son)
16. Bugbear
17. Toucan
18. Scapegoat
19. Hamster
20. Emu