What did the animals do to be sentenced to a life behind bars?

This photo was taken by a Hasselblad 500C medium format film camera with a Carl Zeiss Distagon 1:4 f=50mm lens and Zenza Bronica 67mm SY44•2C(Y1) filter using Ilford FP4 Plus 125 film, the negative scanned by an Epson Perfection V600 and digitally rendered with Photoshop.