Find out the pair which is different from the other given pairs :
ACow and Buffalo
BCock and Hen
CHorse and Mare
DDog and Bitch
ACow and Buffalo
BCock and Hen
CHorse and Mare
DDog and Bitch
Related Questions:
Based on the english alphabetical order , there of the following four letter clusters are alike in a certain way and thus form a group. Which letter cluster DOES NOT belong to that group ?
(Note:The odd man out is not based on the number of consonants/vowel or their position in the letter cluster.)