standard-bred

A standard-bred animal is one that is bred especially to conform to requirements agreed upon by breeders and exhibitors.

It reminds me of the time I went on a hunt on a Standard-bred trotter.

These were hardy little animals, a cross between a standard-bred saddle horse of the north and a mustang.

It was Miss Hinckley in a smart trap, to which was harnessed a beautiful horse, standard bred, one could see at a glance.