Got a male cat from rescue 4 days ago. He came to them 5 months ago and they don’t think he’d had any human contact before. COVID hit so he was forced to stay there rather than sent to a feral centre. He bonded with one of the girls there to a point he’d sit on her lap. I went to see him, he came to me for a head scratch, then hissed, swiped and bit me..let me add claws were retracted and no pressure at all when he bit. Anyway 4 days in, he’s come out from the back of the washing machine, and moved into a cardboard box in the kitchen. Comes out when I go in the kitchen, puts one paw in the living room, sits and watches for a bit....now here’s the thing, when I feed him (he seems very greedy) he sits by my foot and hisses! He don’t swipe, so I look down at him and say no need for that...he tries to meow...it’s almost like he don’t know how..no noise resembling a meow comes out..which is why I ask are hisses bad?