Words given on the left side of (::) are related with each other by some Logic/Rule/Relation. Select the missing word/word pair on the right side of (::) from the given alternatives based on the same Logic/Rule/relation.

Dog : Bitch :: Bull : ?

Cow

Logic followed here is :

Dog : Bitch

Dog is opposite gender of Bitch .

Similarly ,

Bull : ?

Opposite gender of Bull is Cow .

Cow is correct answer .