Final answer:
Without nonexamples, a student might misinterpret that 'pet' only refers to small, indoor animals and may not recognize that pets can also be larger animals or those that live outdoors, and not all animals like wild or farm animals are considered pets.
Step-by-step explanation:
When a teacher uses the examples dog, cat, goldfish, and canary to teach the new vocabulary word "pet" without using nonexamples, one misinterpretation a student might make is that a pet must be a small animal that lives inside the home. Due to a lack of nonexamples, the student might not realize that pets can also include larger animals such as horses, or animals that primarily live outside, such as chickens. Additionally, without nonexamples, students may not understand that wild animals and farm animals kept for agricultural purposes generally are not considered pets.