We had a male cat who definitely acted like he thought he was one of us.
Just the way he would look at us in our eyes.
I recall getting ready for dinner and he jumps in one of our seats and sits there looking at us like ‘Please pass the...”
Ours has been known to do the same. Sit at an empty chair at the table, with his little face just over the edge of the table, watching everything, like he’s part of the action.