A "kuyruk" (tail) is an elongated structure that extends from the rear of many animals, including mammals, birds, and reptiles. It serves various functions, such as balance, communication, and locomotion. For example, in cats, the tail helps maintain balance while climbing and jumping. In addition to its physical functions, the kuyruk can also play a role in social interactions. Many animals use their tails to express emotions; for instance, a wagging tail in dogs often indicates excitement or happiness. Overall, the kuyruk is an important feature that contributes to an animal's survival and behavior.