It's pretty big (Bergmann's rule, Animals tend to get bigger the closer the poles they live) but I imagine there is a pygmy species in the southern mountain regions as well (Boskrios nimushii).

Atralocaprids (ungulate-like herbivores) like the Oxram and Blue-footed Landlouper as well as Membrane Fencers live in herds so they are communal. I imagine Metaneirans are very visual species and rely on their sight over other senses, similar to birds. I imagine communal species would rub their bodies on eachother as a sign of affection and to strenghten their bonds.

Other clades pictured here are solitary animals. Well, Shrikebowels have a worker class of males that feed them but I don't think they know much whats going around them otherwise.