1º) Click this link from your mobile phone to download the latest version of WhatsDog for Android:
Download WhatsDog for Android version 5.0.0 (last official version)
2º) Click Internet as browser to use for download WhatsDog.
3º) Click on the downloaded file that will appear in the notifications panel of your phone.
4º) Click Settings to unlock the installation of applications that have not been obtained from Google Play Store.
5º) Clic Unknown sources to allow the installation of applications from sources other than the Google Play Store.
6º) Clic OK to activate Unknown souces option.
7º) Clic Next to accept the application permissions.
8º) Click Install to begin installing the application.
10º) Installation completed! Click Open to open and enjoy WhatsDog.