Neon Lighting Source

My fiance and I purchased 2 rats. They're both female, and both from the same litter. The only issue is they're constantly yanking each other down from the ladder, biting or nipping at each other, pushing each other into the glass and "mounting" each other.

I always check them and have not seen any open wounds or blood yet. At night, they always cuddle and lay on top of each other, they always drink out of the water bottle at the same time.

Is this normal behavior? Are they trying to show dominance?

It was on the north side of 111th between Spaulding and Kedzie.
It was open, apparently at the whim of the owner.
When word-of-mouth spread, the place was inundated with customers who said he served the very best burgers in town.
The owner was the only one who would accept Nehi bottles for the 2¢ deposit.
The owner usually tried to make kids accept ½ of the deposit money in the form of trade - usually moldy Twinkies.
Every parent in the neighborhood of Mount Greenwood forbade grade-school kids to go there but every grade-school kid was inexorably drawn to the place.
This place was mentioned in "The Last Catholic in America" by John R. Powers.

I was very young and recall Nehi deposit thing but nothing else as my folks wouldn't dream of letting us eat there.

So...does anyone know the name of this place?