Northstar Vale who put the Halo novels here?

Umi wasn't sure exactly what brain fuzz was, and she thought about what happened when she stood up a little too fast. She decided that it was like that, where your vision went kinda funky and you had trouble focusing. Usually that went away after only a few seconds, though. Benry's brain fuzz seemed to last a lot longer. Weirdo, she parrotted, reaching out a paw to boop his nose.

That happens when I stand up fast, she said, mostly to confirm she knew what he was talking about.