Agree. Alligator snappers, Macrochelys, are pretty mellow animals compared to common snappers, Chelydra.Actually...
Common snappers kill ducks but despite what Wikipedia will tell you, they have never been known to eat adult raccoons. Alligator snappers, however, have a very similar hunting behavior to Matas, and normally consume only fish as well. And I have personally seen Matas devour very large fish.
Common snappers could be called the "meanest hidden neck you can choose," but not alligator snappers. Alligator snappers are surprisingly docile.