DOGS
All answers begin with the word dog.
1. A small shark.
 Dog fish
2. Overbearing, asserting positiveley.
 Dogmatic
3. Expressing vexation, especially in the U.S.
 Doggone
4. A motherless calf.
 Dogie/dogey
5. The chief magistrete in Venice.
 Doge
6. A two-masted Dutch fishing vessel.
 Dogger
7. A mixture of gin and beer.
 Dog's nose
8. A cigarette stub.
 Dog end
9. The period when Sirius rises and sets with the sun.
 Dog Days
10. A sharp bend.
 Dog leg