The dog chased its tail. [SC}

Dear Hinjax,
I'm happy to respond. I totally agree with you. The word "its" is a pronoun, a possessive pronoun. It's true that a possessive pronoun modifies a noun as a adjective would. On pp. 30-31 they call the pronouns "my, your, her, his, its, our, their" function possessive adjectives, which, according to them, kinda count as both an adjective and a pronoun. I don't know whether this classification sits well with me; I have not come across it in other grammar sources. This is an extremely subtle point, and to some extent a matter of taste. For the purposes of solving GMAT SC problems, you needn't worry about matters of taste in the subtleties of grammatical classification.

Does all this make sense?
Mike
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Thanks Mike. Yes, it makes some sense to me now.