Hummel

A pure Aberdeenshire heifer was served with a pure Teeswater bull, to whom she had a first-cross calf. The following season, the same cow was served with a pure Aberdeenshire bull; the produce was a cross calf, which at two years old had very long horns, the parents both hummel.

Source: wiktionary

A little hillock gave me ample concealment and an excellent rest for my rifle; and there I reposed as hinds and little stags filed by. First came the wary old hind, looking sharply about her; then a little stag, indifferent to consequences; then more hinds and calves; and last of all the great hummel. As he landed on top of the brow, about fifty yards from me, he stopped to look around. I drew a bead on the junction of his neck and shoulder, pressed gently on the trigger; a bang—smack, followed, and the great hummel lay stretched upon the heather.

Source: wiktionary

Hornless Stags are not unknown, especially in the German forests. By this expression is meant, not stags wich have once carried antlers and shed them, but stags which have never possessed any. In the Highlands they are termed hummel stags; […] Haviers, or stags which have been gelded when young, have no horns, as is well known, and in the early part of the stalking season, when seen through a glass, might be mistaken for hummels; but as the season advances, the necks of the latter swell, and (except in the matter of horns) they assume all the characteristics, both in appearance and behaviour, of ordinary stags, and are thus easily distinguished from haviers.

Source: wiktionary

Regeneration in the animal kingdom always requires a wound stimulus. Regrowth of antlers is no exception, the wounded pedicle exposed by the casting of the previous set of antlers serving as a vital stimulus for renewal of antler growth. This was convincingly demonstrated in congenitally polled (‘hummel’) red deer, which lack antlers, have pedicles, and can be induced to form a set of antlers if the tips of the pedicles are amputated.

Source: wiktionary