Hello! I am new here too but I thought I was would say hi anyways.
As other people have said, it is a bit funny what your dad unknowingly got himself into
When I brought home my 2 kittens, my dad took one look at them and said "NO WAY". But being the disobedient teen that I was at the time (I was 15), I just didn't listen and kept them anyways
Soon my dad fell in love with them, I always catch him picking them up, petting them, talking to them by himself, etc.
As other people have said, it is a bit funny what your dad unknowingly got himself into