How can I receive lives in the game?

You can have up to five lives in the game. You receive one life every 30 minutes if you have less than 5.
You can find the amount of lives you have at the moment in the upper right corner of the game screen.
If you loose all the lives you can buy them in the shop for coins.
Some animals give you an “infinite lifes” booster as a gratitude for the help. This booster will be valid for 30 minutes from the moment you receive it.