This is Desktop Pet Fang.

Double click the desktop_fang.exe to launch. It takes anywhere from 10-25 seconds to launch, depending on your device.
She doesn't have an icon on your system tray. 
If she misbehaves, you can find her process in the Task Manager (the exe file).

Interactions:
-Left mouse button: Click and hold to drag her around.
-Mouse Wheel: Toggle between her sizes: default, half and 1/3rd.
-Double Right Click: This boops her. This has a few different reactions.
-Middle Button Click/Mouse Wheel Click: Exit the app. 
-Control+Left Click: It will open a new browser tab (in system default browser) and navigate to snootgame.xyz .