ARE ALPACAS HERD ANIMALS
Alpacas are naturally herd animals and only really feel safe with their own kind.
Also it is recommended alpacas are kept in SAME SEX herds, two minimum although three or more is preferable. If both sexes are kept they need to be kept apart.
They can co-graze with other species but need fed separately. As they have a lower threshold for parasite burdens than other domestic animals so they need monitored if grazed with non-alpacas.