Anatomy of the outer ear
The outer ear contains cartilage, connective tissue, blood vessels, nerves and skin. Its form depends on structure, development and individual variation. The chart is conceptual and does not represent measured percentages in Xoloitzcuintli.
Components of ear tissue
Collagen
It forms part of the cartilage matrix and contributes to structure. It does not determine final ear position on its own.
Extracellular matrix and water
They help maintain tissue mechanics and form part of normal function.
Elastic fibers and associated tissues
They contribute to flexibility and movement together with muscles, skin and connective tissue.
Qualitative observation stages
Ear position may change during growth and every puppy shows individual variation. This tool organizes observation points without assigning ages, deadlines or an expected result.
Select a size:
📌 Standard Xolos also show individual variation. Document changes and consult a veterinarian if you notice pain, inflammation, discharge or lesions.
Genetics, variety and limits of evidence
Variants involving FOXI3 are associated with the hairless phenotype and dental changes. This does not support universal percentages for erect ears or attribution of ear position to a single gene.
What the evidence supports
Hairless variety
The hairless phenotype and certain dental changes are associated with FOXI3 variants. Ear position varies and should not be expressed as a universal probability.
Coated variety
The coated variety belongs to the breed. This guide provides no basis for assigning a specific percentage of dropped ears or inferior cartilage quality.
Reviewing common ear myths
Popular practices claim to “help” ears stand. Select each card to learn why these should not be treated as universal instructions and when professional guidance is appropriate.
Myth: extra calcium
Myth: constant taping
Myth: shaving the ear
Continue exploring Xolo development
Connect ear development with size, skin and observation of the whole dog.