Girl's Best Friend — Leslie Margolis

OBSERVATIONS:
* Milo is the name of a boy with floppy hair.
* Milo is also the name of a puggle (a cross between a beagle and a pug).
* Both Milos are adorable. (According to one Maggie Brooklyn Sinclair.)

Dogs are disappearing all over Park Slope, and it's up to Maggie Brooklyn to figure out what's going on. Maggie knows things. She notices details that other people miss. Plus, she has a semisecret after-school gig as a dog walker. So she is the perfect person to solve the mystery.

Unfortunately, Maggie is also the perfect person to help her ex-best friend, Ivy, recover her lost dog, Kermit. Maggie may not like Ivy anymore, but she's got nothing against Kermit. Besides, she already has leads on a few suspects. But even though Maggie knows a lot about dogs, apparently she doesn't know anything about boys -- because she never expected her crush, Milo, could be involved ...