GameSpot
Previewed by Jason Ocampo, with screen shots and gameplay movied. "Zoo Tycoon 2 will offer a lot more depth than the original game, though not at the expense of difficulty."
GameSpy.com
Preview by Carla Harker. Includes screen shots and movies. "...[T]his newest incarnation of the Zoo Tycoon series looks to have enough of what made the game successful in the first place while adding enough strategy elements to appeal to everyone else."