There are 3 E's, 7 A's, 6 I's, 5 S's, 4 U's, 9 O's, 3 M's, 4 T's, 1 N, 2 R's, 2 B's, 3 D's, 4 G's, 1 Y.

My dog is -a-- -it bu--, -a-- -ood-e. Not mu-- o- a -at--dog,
but a -i-ious gossi-! ~ -raig S-oema-er

Letters left to guess:
C F H J K L P Q V W X Z

Score:
Dixieland Dancer E(3) + Y(1) = 7
Dog lover5678 A(7) + U(3) + M(3) + N(1) = 24
ShepherdLover I(6) + G(4) = 16
Souraya S(5) = 5
petspoil O(9) + D(3) = 21
delidog T(3) + B(2) = 5
BoxerLover = R(2) = 2