From afar the design appears to have been carved from the underlying chalk; however, the modern figure is actually formed from white-painted breeze blocks.
During the 1952 refit, the majority of the internal walls were stripped out with new breeze block partition walls forming a number of small offices around the central ring structure.
The sorrowful, intelligent animals endured a squalid life in a cold breeze block outbuilding as well as an appalling diet before they were eventually rescued.
A breeze block screen wall can be a beautiful thing -- the pattern of each individual block adding to a greater whole, and a larger pattern, when they're used en masse.