FriendZoo by Aspyr is a nice application that allows you to map your contacts as animals of a virtual zoo, with lots of atmosphere appropriate for each of them.

With this app you can convert each of their contacts in a different animal, choosing from 18 different species placed in 5 unique scenery of nature, and assigning each to the animal features more appropriate.

You can call, send text messages and emails to each "animal contact", and not only: the more we interact with someone, the more relevant the animal appears happy and satisfied inside the zoo.
The application does not offer any particular option to make it indispensable in any case it is a nice software. For those who want to try it, here’s the direct link respectively Store to download FriendZoo, at a cost of 2.39 euros.

FriendZoo