Relative pronouns for animals

[shravsi]

I am currently reading a book about Orca whales. Can you please share your thoughts about using relative pronouns for animals-who, that, which.

The Ocra whale has a name, Tahlequah.

While AP style says animals with names should be referred to as who, Chicago style and APA style says animals should be referred to as that/which.

Which style should I follow for my book review?
Which style guide do you follow in general?

Which sentence do you think is grammatically correct?

1) Some of you might have heard about the orca whale Tahlequah, which carried her dead baby for 17 days.
2) Some of you might have heard about the orca whale Tahlequah, who carried her dead baby for 17 days.

[MrsCatInTheHat]

I would use "who," not "which."

[shravsi]

I would use "who," not "which."

Thank you