Thank you, glad you liked the concept :) The curent state is really not that clean so it is actually not that easy to understand evrything during gameplay.
You did get a meow sound before starting the game, so when you pressed your south button after the timer announcement, you should get a new meow sound, though AI could validate at the same time as you and the sounds can be unclear. There is also a win/defeat sound at the end of each round to know the result of the round.
Last thing if you try it again, player nimals are randomized so you may noot get the cat next time (chicken and frog’s win/defeat sounds are less clear than cat and dog’s)