Leucistic and albino pugs are often mistaken for each other. However, they are fundamentally different in terms of everything from the cause to the manifestation.
Albinism in pugs
Albinism in pugs is as a result of genetic mutation in the genes responsible for producing melanin.
The result is an albino pug with an absolute lack of melanin.
This covers everything from the fur and eyes to blood vessels.
With albinism, the fur on the pug will be completely white in color but maintains the other coat features of the parent. Other surfaces like the paw pads, nose and rim around the eyes take on more of a pale pink hue. Finally, the lack of pigmentation results in blue or even translucent eyes.
This trait is recessive in nature. This means that both parents need to either be albinos or careers of the gene for it to manifest in the pug. For this reason, albino pugs are incredibly rare.
Leucism in pugs
A leucistic pug on the other hand gets its white coloring from a different genetic mutation affecting pigmentation.
This affects melanin formation at a DNA level. Unlike albinism which causes total lack of pigmentation, a leucistic pug will have melanin on their irises, paw pads, noses, and even blood vessels.
They will appear a darker shade of blue or even brown for the eyes and dark pink for the rest of the surfaces.
However, the fur, much like in albinism, is completely lacking in melanin and results in white coloring all over the body from the root to the shaft.