It seems that the owner of the Miami ZOO is trafficking exotic animals so you´ll have to find out more and solve this case:
Look over there. It´s him! Go talk to him and try to act normally so he has no suspicion:
Well, well, well...somebody is acting strange here:
Just look around and make sure to check the fenced area in the back.
Ok, it seems that you are very close. The animals are probably locked up in the nearby hangar so you need to get there and save them:
To release the animals from the cells you need to connect the pipes in the upper area correctly first. Make sure to check the direction of the lines on the pipes: http://prntscr.com/t04iob Then just turn the red valve. This way you will flood the electricity system that will unlock the gates and release the animals.
In the end it should look like this:
Now you need to get outside and enable the boom gate controls:
Yes! You solved another case!