Shadhahvar is a type of carnivorous unicorn

Unicorn

The unicorn is a legendary animal from European folklore that resembles a white horse with a large, pointed, spiraling horn projecting from its forehead, and sometimes a goat's beard...

 in Persian

Persian literature

Persian literature spans two-and-a-half millennia, though much of the pre-Islamic material has been lost. Its sources have been within historical Persia including present-day Iran as well as regions of Central Asia where the Persian language has historically been the national language...

 folklore which resembles a gazelle

Gazelle

A gazelle is any of many antelope species in the genus Gazella, or formerly considered to belong to it. Six species are included in two genera, Eudorcas and Nanger, which were formerly considered subgenera...

 with a single hollow horn. Graceful and a little melancholy, the animal stands approximately six feet tall at the shoulder, but is very thin. Dark patches mark its face, dripping down from its eyes which gives the appearance of perpetual tears. When wind blows through the horn, a melody is produced not unlike that from a flute

Flute

The flute is a musical instrument of the woodwind family. Unlike woodwind instruments with reeds, a flute is an aerophone or reedless wind instrument that produces its sound from the flow of air across an opening...

. The music attracts both human and animal alike. Once an animal is near, the shadhavar will use the opportunity to attack its prey in a vicious manner.

The shadhavar can be thought of as an "Evil Unicorn." Many similarities can be drawn between the shadhavar and the Sirens from Greek mythology that endangered Odysseus on his journey.

In games

A shadhavar is one of the mounts available in the online text-based game Legend of the Green Dragon.