This is: a quintuplet of cats.
One plays the banjo, one plays the penny whistle, and two play the double bass. A cat quintuplet is a difficult thing to find a lot of the time - this one just happens to belong to a traveling group of hobos who put on miniature circuses for tourists new to the "big city". The hobo introduces them as "The Fantastic Feline Foursome!", then they jump out of a cardboard box, and play The Maple Leaf Rag. It is considered the highlight of the show.
Connections:
Pet of: Cyrus Bilford.