The morphological differences between them are very few and unimportant.

There are some morphological differences between subspecies from different regions.

These morphological differences reflect the way the male and female copulate.

There are also clear call and morphological difference between the two.

However, morphological and temporal differences tend to support its claim.

There is very little morphological differences between the races which makes diagnosis difficult.

During the 1980s and 1990s, several studies were conducted to examine morphological differences among the breed lines.

These morphological differences pose no health risk, and are simply a difference in form.

There are also some morphological differences in the shape of the tarsus.

A lack of morphological difference doesn't necessarily mean genetically the same.