Step-by-step explanation:
Based on the information provided in the encyclopedia entry, Devon can determine if his new dog is an English or American Labrador Retriever by considering certain characteristics. The English breed is described as stocky and heavy, while the American breed is described as tall and lanky. Additionally, the weight of the dog can provide a clue. Males of both breeds usually weigh about 29-41 kg (65-90 lbs), and females weigh 25-32 kg (55-70 lbs). By comparing the physical appearance and weight of his dog to these descriptions, Devon can make an informed determination about whether his dog is an English or American Labrador Retriever.