for Bartleby of the Big Bad Bayou by Phyllis Shalant and Brian Floca
Bartleby, the red-eared turtle, and Seezer, the American alligator, have swum the Mighty Mississippi to reach bayou country, their true home. But when they find the creek where Seezer was born, they discover it's ruled by Old Stump-a giant gator with a gargantuan appetite. Fortunately, Bartleby has a knack for making friends, and there is soon a new crew to count on, including a red-ear named Lucky Gal. Still, life in bayou country is full of challenges. Does Bartleby have what it takes to make this strange new world his own?
Publisher description retrieved from Google Books.