: You will usually see the most dramatic "mask update" between 6 months and 2 years of age. 3. Identifying a Purebred "Chitu"
The physical appearance of a Shih Tzu puppy's face is determined by specific genetic markers, primarily located on the Melanocortin 1 Receptor (MC1R) gene, commonly referred to as the E-Locus. The Black Mask Allele ( Emcap E to the m-th power chitu baby dog no mask upd
: Prone to dental issues and respiratory sensitivity due to their flat faces. : You will usually see the most dramatic
The Mystery of the "No Mask" Phenomenon: Why Do Colors Change? chitu baby dog no mask upd