Which feature is critical for the cavy's presentation in front of judges?

Fur texture and grooming are critical for a cavy's presentation in front of judges because these factors showcase the animal's overall health and care. The judges are trained to assess the quality of a cavy not just on its conformation and breed standards but also on how well it has been maintained. A well-groomed cavy, with clean and appropriately styled fur, reflects attention to detail and care by the exhibitor, which can greatly influence the judge's perception and scoring.

Grooming such as brushing to remove excess hair, dirt, or debris, as well as ensuring the coat is free of tangles, enhances the cavy's appearance. Furthermore, proper grooming can also highlight the texture of the fur, which is essential in determining the overall quality of certain breeds. In contrast, the other factors, while relevant, do not carry the same weight in terms of immediate visual impact when evaluated by judges in a show setting.