I haven't thought of it before. The stores I shop are Grocery Stores. Everything is just food and household items. Supermarket sells more than groceries. Read the differences would be an in-store Bank, Pharmacy, non-grocery related items like cloths.
Walmart has Supermarket stores with mostly Groceries. Also sells Appliances and has a Eye center and Bank inside.
There used to be a Supermarket before downsizing that had a Aquarium Shop inside. The neon Tetra fish were cool looking.
Here if you can buy pet stuff in a grocery store than mostly just food and some toys, but no animals. For animals you need to go to a specific pet shop. There are some chains but IDK how many
The 4 chains I can think of right now in Germany:
Zoo&.Co
Fressnapf
Das Futterhaus
Kölle Zoo
