This achievement is not obtainable in the tutorial levels.Simply start up a
campaign or
challenge level from the main menu. Once the level loads, press
and use the left analog stick to find a blank/unoccupied piece of land. Hover your cursor over that piece of land and press
. From there, click on "Exhibit" and keep choosing exhibits until you find one with a small microscope in the top right (the higher the "fame" level of your zoo is, the more stuff you are able to research). Click on that exhibit and it will ask you to confirm that you want to research it; choose yes and a timer will appear in the top left of your screen. Once the timer reaches 0:00, the achievement will pop.
This can also be obtained by researching animals, mini exhibits, decorations, concessions and facilities. Researching a giraffe is an early-level research, so if you're for some reason having trouble with researching exhibits, visit a pre-existing one and research a giraffe instead.