Yeah, but did you hear how manufacturers of it claim it cleans a dog's teeth and promotes oral health?
At least nowadays, dog biscuits tend to be hard and dry, manufacturers claim that is to keep dog teeth clean.
How did the idea of dog biscuit come about? Do you mean "dog's bread"? If so, then I'm not sure of how they came to be but know they've been around since the Romans. Wow so it has been around for hundreds of years!
Some manufacturers claim the dry and hard biscuit texture helps clean the dog's teeth, promoting oral health.