Dogs primarily choose their food based on smell rather than taste, with an estimated ratio of 70% aroma to 30% taste. In contrast, cats rely more evenly on both senses, with a 50/50 ratio. This difference in how dogs and cats perceive food is crucial for understanding their eating behaviors.

When a dog finds a food's smell appealing, it may eagerly consume it, leading owners to believe the food is popular. However, this enthusiasm could be misleading, as the dog's enjoyment may stem from an enticing aroma rather than the actual flavor. This insight emerges from Mary Roach's book, "Gulp: Adventures on the Alimentary Canal," which explores the intricacies of animal eating behaviors.