If you're looking for a user-friendly interface, download Dog Life Simulator by opening the Google Play Store
Once you're there, you can click on the search bar at the top of the screen
Type in the name of the application and click on the app icon in the search menu
Tap "Download" and wait for the app to install onto your mobile device
Steps to Uninstall this app
If you no longer want this application on your mobile device and want to delete the Dog Life Simulator app, then you'll need to navigate to your Applications Manager
Once there, you'll be able to scroll through your apps until you reach the Dog Life Simulator app
Click on the application and hit the 'Uninstall' button
Wait for the app to uninstall from your device. It will take all the app's data with it