The main accompanying Maple session is this one. It points to four other sessions, for the calculation of invariants, of decoupling functions, for proving that no such function exists, and solving the algebraic models.
The accompanying Maple session.
Supplementary material available on Manuel Kauer's webpage.
Another (much bigger) multi-directed animal, generated by Axel Bacher following the algorithm described in his paper Directed and multi-directed animals on the king's lattice.