Experiment with unusual sounds early on.

Instead of just mimicking animals, try humming, whispering or even singing into the game. The audio filters are crazy unpredictable, but using a weirder recording is usually the funniest and most satisfying.

Prioritize adopting new animals quickly.

The unique profit model means that your income is proportional to the number of animals in your Zoo.In other words, in order to earn money faster, you expand your menagerie faster, enabling you to unlock new parts of your Zoo and wonderful new features more quickly.

Re-record animals regularly for variety.

Since there is no penalty for replacing a sound, revisit older animals and give them fresh recordings. This simple habit keeps the zoo feeling alive and prevents the experience from growing stale too quickly.