My previous dog loved to chase our cat. He'd be lying on the couch, and` she would walk up to him and start poking him with her snout to try to get him to run. He would either stay put or slowly slink away.
My first dog would make this happy grunting noise when she saw someone she knew.
The good: My guinea pigs do cute little hops and skips and zooms when they're excited.
The bad: if I even quietly open a bag of chips in my room they will think they're missing out on food and scream as loud as they can. Which isnt very loud but it makes me feel bad and so I go downstairs to get them some fresh veggies or a snack of some kind.