Surely that costs more than just putting up decent signs?
One of my pet hates is poor labelling - even if they just added scientific name, distribution and diet (which admittedly is implied by the animal's name in this case) and made the image a bit more accurate it would improve it no end.
Though I agree that a good sign would make this better, and the average guest would be more likly to read a sign, the signs here are used in the theming of this exhibit.