I love the animation of the dog in general, (although the barking anim looks like he is sneezing?) and think an exploratory game with that artstyle could be lovely.
Overall I was confused as to what I was supposed to do, but figured out I was meant to bark into the instruments to amplify the sound.
This could be communicated to the player much better; and the consequences of the loud bark could be more linked into sound consequences? (Making someone drop something, startling them, gaining someones attention, etc.)
As it is now; the barking seems to set off a Rube Goldberg machine, which is a cool idea.
But imagine extending this principle to; being a dog in a chefs kitchen, and trying to ruin the meal of the day. You could bark at different things, to create chain reactions that the chef would try to undo.
(just an idea)
Good job though, and for a personal project and second game jam; well done!