What might be a reason for a cavy's disqualification during a show?

Missing teeth is indeed a valid reason for disqualification in a cavy show. The cavy's mouth and dental health are crucial for its overall well-being and presentation. In the context of show standards, cavy breeds have specific requirements regarding their dental structure. Missing teeth can affect the animal’s ability to eat properly and may indicate underlying health issues, which is why judges consider this factor seriously. Therefore, the absence of one or more teeth can lead to a cavy not meeting breed standards, resulting in disqualification from the competition.

In contrast, unusual coloration, while it may be a concern depending on breed standards, does not automatically disqualify a cavy as some breeds accept a variety of color patterns. Poor grooming may affect the overall appearance and presentation but is more often noted as a reason for lower scores instead of outright disqualification. Incorrect weight could lead to a cavy being placed in the wrong category or receiving a penalty, but it typically does not lead to disqualification unless it's extreme.