0_Apprentice
How did the idea of dog biscuit come about?
1_Wizard
"Dog bread" as it was called was already mentioned since the Roman, so they have been around forever
0_Apprentice
Wow so it has been around for hundreds of years!
1_Wizard
At least nowadays, dog biscuits tend to be hard and dry, manufacturers claim that is to keep dog teeth clean.
0_Apprentice
how can they get?
1_Wizard
Chewing dry hatd thing can clean the teeth somehow.  Dog biscuit usually are sold in a flat bone shape.
0_Apprentice
What is a dog biscuit usually made up of?