The advent
of selective
breeding has changed the way dogs
of a
particular breed look and has given rise to over 400
breeds of dogs whose
features can be recognized but there are several mixed
breeds which still need some research.
RSPCA dog welfare expert Lisa Richards told The Huffington Post UK: «Many dogs have been
bred to emphasise certain physical
features, some
of which have become so extreme that they can cause pain and suffering, make dogs prone to
particular disorders, or even prevent them from behaving normally and from enjoying the activities we know dogs love.