The Pet maths challenge

Code:
A 1 H 8 O 15 V 22
B 2 I 9 P 16 W 23
C 3 J 10 Q 17 X 25
D 4 K 11 R 18 Y 26
E 5 L 12 S 19 Z 27
F 6 M 13 T 20
G 7 N 14 U 21

Cats , Dogs , rabbits , Fish , Hamsters , Guinea pigs and rats.Work out which one has the highest lowest total .Find out the total of your favourite pet.