Yridian yak

The Yridian yak is an animal found on Yridia, the homeworld of the Yridian race.

In 2372, Julian Bashir commented that, after playing Morn in a game of darts, the Lurian couldn't hit a Yridian yak from five paces away. 

Ulrika Corsi owned a sweater made of wool from the Yridian yak.