My bloodhound will snoot me (poke my arm with his nose and snort) when he wants to play/go out side.
If you ignore him he'll place his chin flat on a surface (like the coffee table) and stare you down.
My kitty is a bit aloof, not the most loving. BUT, every night she will climb up on my chest when I lay down for bed and dish out some awesome purrs for me. I call it her tucking me in to bed for the night, cause about 15 mins later she leaves to sleep under the bed.