Granted, but shapeshifting into anything besides another animal leaves you basically braindead. Not that being an animal doesn't severely limit you as well. Good luck finding "transform back" in the instincts and specific learned behaviors of an animal.
If you, in an attempt to impersonate, shapeshift into other humans, you have two options. Shapeshift into their body but keeping your brain, giving you their voice and appearance, but no accents, manners of speaking, body language or personality. If you choose to shapeshift into someone else entirely, then congrats, you're practically a clone of them now, having no idea how they got where you were when transforming.
I wish for all the world's clocks to never show the incorrect time for the timezone they're in.