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", though unfixed males are certainly more territorial. This is evidently an example of neoteny, the retention of juvenile traits in adulthood, seeing that most felids do have a social period while living with their mother and littermates.