Question

Ox:Bull::vixen:____
Fill in the blanks ......​

Answer 1

$\sf\large{Here\:is\:your\:Answer\:!!}$

Ox:Bull::Vixen:____

Your Answer is Dog.

Because

Vixen is Female of Fox

Dog is male of Fox .....

_______________________________

Answer 2

Ox:Bull::Vixen:___Dog___

Your Answer is Dog.

Because,

Vixen is Female of Fox

Dog is male of Fox