"Sarah and Nicholas Fraser, the irrepressible sister-and-brother duo of Eric Walters's bestselling Tiger by the Tail, Tiger in Trouble, and Tiger Town, are back for a fourth adventure. The kids are already swamped with exotic animals when Mr. McCurdy and Vladimir, the owners of Tiger Town, rescue another truckload of creatures, including two baby kangaroos, a leopard, and a lion. Always the worrier, Sarah frets about finances and wonders how they'll...