[cypher]

That might explain it then, pet shop Russians are almost certainly hybrids (regardless of what they may be labelled in store) so you can expect almost anything as far as changes go.
He may continue to change, some seem to change more than others & some not at all, they are all unique & lovely in their own way & I enjoy watching the changes & sometimes it surprises me when I look back at early photos just how much they have changed!