"I Heard My Dog Bark" is a Sesame Street song about somebody who gets up in the middle of the night to get something to eat. But he knocks over a big pot in the kitchen, which makes his dog start to bark, his cat start to meow, his horse start to neigh, his lion start to roar, and his bee start to buzz. He finally puts them all to bed, but his pet mouse knocks over the pot, and it starts all over again.