I don't think the link really describes someone who is "antisocial" IMO
It describes someone who lacks empathy but not my definition of antisocial.
To me someone who is antisocial is withdrawn, quiet, shy, enjoys time alone, may feel awkward or anxious in social situations, may avoid social situations.
Someone who harms animals or sets fires, lies and is manipulative is someone who lacks empathy for other living things, which I do believe is dangerous. Empathy is one of the major emotions or characteristics which set humans apart from animals, and if you lack empathy you lack the ability to understand how your actions effect other people/living beings which makes a pretty dangerous person.