There are many fascinating things about cats, but one of the things I often think about is how interesting it is that an animal of such solitary nature became domesticated so easily, and how social – and socially intelligent – domestic cats came to be, despite stereotypes. To the point that many housecats, and entire breeds, are called "dog-like" in their demeanor. Female feral cats also form social groups, "colonies…
Cats are actually very social animals, they just don't firm similar pack structures to dogs With modem technology it became feasible to observe cats without disruption and it showed communal behaviours, including communal care for offspring and IIRC even bringing food to share. All along the line of somewhat transitionally joined communities instead of more stable groups
Cats are very communicative, which suggests they're strongly social, in the broadest sense.