Farm Dog (Marley: I Can Read Book 2 Series)

When Marley's family visits Uncle Bob's farm, Cassie turns out to be an excellent farmhand but Marley just seems to get in the way. He tries rounding up the chickens, but all he does is excite them. He attempts to herd the sheep, but they think he's playing a game. Surely there's something Marley can do to help!