Final answer:
The statement is false because alligators are reptiles, part of the Crocodilia order, whereas dogs are mammals, part of the Canidae family, and have different biological characteristics.
Step-by-step explanation:
The statement 'Alligators are reptiles & dogs are reptiles' is false. Alligators are indeed reptiles as they belong to the order Crocodilia, which also includes crocodiles, caimans, and gharials. These animals are characterized by a semi-aquatic lifestyle, being predominantly found in tropical regions around water bodies like rivers and lakes. Reptiles like alligators and crocodiles share a common ancestry with birds and are considered the closest living relatives of dinosaurs.
Dogs, on the other hand, are mammals and belong to the Canidae family. As mammals, dogs have a completely different set of characteristics when compared to reptiles, such as being able to regulate their body temperature internally, having fur or hair, and most giving live birth rather than laying eggs. Dogs were also domesticated from wolves and have evolved to have a variety of roles in human society, from companionship to work.
Therefore, while alligators are a part of reptilian biodiversity, dogs do not belong to the reptile class but rather to the class Mammalia.