The images come from the 13th century Ashmole Bestiary, which actually depict God creating the animals, birds & fishes. That God should look so much like Jesus creates certain problems for a Gnostic such as myself, so the images immediately become something else, especially as it looks like God did his creating in a menagerie, which raises all sorts of notions, Theological & otherwise.
Whilst many of the pieces slated for inclusion on JATZ are animal related, the others explore themes of Animal Nature from a Gnostic perspective: Mad Maudlin is the human mind astray in the animal body encompassing the entire cosmos even unto the raiding of Hell; Tempus Est Iocundum is the animal body aroused to the exclusion of the human mind - so very much astray with respect of instinct and / or dysfunction.
Thus do madness & sexuality entwine; feared by the Church, yet celebrated by Shamans, Pagans and Feral types alike! So - good Christians beware, though of course such duality is the essence of the Gnostic Tradition embedded, I feel, in spiritual traditions of the West these past 2,000 years and more*. A while ago Christians were wearing little bracelets with the letters WWJD on them - What Would Jesus Do? - and one answer has to be - He would go to the Zoo. Why? Because Zoos are arks, more pragmatic means of conservation emerging out of our ongoing curiosity for a world now in crisis which we still perceive in symbolic and ideological terms, though not to the extent proscribed by the Bestiaries.
* The Buddha attains enlightenment sitting peaceably beneath a tree; Jesus Christ through the tortured agonies of being nailed to one. This is the very essence of East / West Dichotomy!
I might add that I'm not religious in the slightest, but religion, and the persistence of religion, I find fascinating in terms of its wider folklore.