Here's why:
* Social Structure: Llamas live in herds led by a dominant male. Within a herd, there may be multiple males, and females typically mate with the dominant male.
* Seasonal Breeding: Llamas have a distinct breeding season, and females usually only come into heat for a short period.
* Competition: There's often competition for mates within a herd, especially during breeding season.
While some individuals may have a preference for certain partners, llama relationships are generally based on social hierarchy and breeding opportunities rather than lifelong monogamy.