intresting,because that isnt nessisarily an animal thing.
dont let me spoil this for you (do NOT let me spoil this for you) but, im going to list a few thing is noticed about that.
cocking ones head can be used to hear better. also can be a social cue to show confusion.
also, i find myself to share traits with cats. such as: prefer night(can be written off), likes to stay light on feet, heterochromia (also able to be writen off), sensitive to somewhat loud noises, for no aparent reason: really likes back scratches.
now, all those can be normal human behaviour, but it kinda opens up some holes in your argument. However,(notice how i caplitaised that?) i feel that the desision for these kind of things shouldent be based entirely off those traits. and im sure you didnt do that.
one final time, dont let that have ruined it for you. (and if your confused why im saying that so much: cant be too careful with talking about someones identity) you also have every right to shut down my argument if you feel like it.