In the first room of the game, there is a window.
Look through the window to see a cutscene of the creature that chased you hunting.
Keep clicking on window to see a new cutscene until this trophy pops. There will be one empty scene towards the end of the series.
If you need more detail, look below.
Spoiler warning:
Once you see the cutscene that ends with another creature eating the blue poop and then speed off on his new wheel, click on window again to see an empty scene.
Click on window again to say hi to the Mongrel. ;)
The trophy will pop right after.