The enclosures used in zoos are usually just variations of glass tanks with frames. As visitors generally include children, the displays need to be accessible to them as well.
The proposed design places the Interactive Transparent Display directly in front of the glass case housing the animals and a gap is left between the display and the glass. In theory this should reduce potential distress caused to the animals by the noise from touching or knocking on the display.
In regards to enclosures with curved glass such as those for aquariums, the display would still sit in front of the glass.
However, the law of refraction will need to be taken into consideration to ensure that the visitor does not see an overly distorted version of the contents of the tank.