Truebred

A truebred nag, whenever walking or trotting, or if ever spoken to, should carry its tail right out.

Source: wiktionary

While Mendel was able to start his experiments with truebred tall and truebred dwarf peas, neither of which had any trace of the other in its past breeding history, his results were naturally more uniform and positive than can possibly be attained with Beagles, large and small...

Source: wiktionary

Branigan on his mount, a truebred quarter-horse out of the legendary Rocking Bar Ranch, rode point.

Source: wiktionary

These two authors were truebred soldiers and heroes, who distinguished themselves in the most famous battles of this war, one in the battle of Port Arthur and the other in the battle of the Japan Sea, and were at the same time men of

Source: wiktionary