In the given Sentence "I have a pet dog named Bagha" 'I' is the subject. A subject of a sentence is a person, place or a thing which performs the action of the verb. A predicate is the part of the sentence which has the verb and tells us who/what the subject is and what is it doing. The predicate in this sentence is "have a pet dog named Bagha". 'Bagha' is the Object of the sentence as the action of the verb is being perfomed on him.