This is actually a really old zoo-trope. The earliest public museums would put three or four unlikely animals together in a glass box--say, a rattlesnake, a ferret, and some mice. This was an excuse to make some seriously heavy moralizing about the benevolence of creation and what these mere brutes could teach us, etc. etc.
Of course, it only worked because the predator animals were stuffed full of food every night, but I imagine it would have been pretty cool to see a scorpion and a puppy snuggling up in apparent friendship.