I have 2 adopted cats in our house and 2 outside our home wanting to be adopted but the originals don't want to therefore each time that we go outside and feed the outsiders they always stare at us and sometimes hiss showing hostility.
!gif angrycat
Via Tenor
One day i brought a stray cat and the house has never been the same, they are in constant quarrel. Glad the old one finally accepted, they are now friend.