>>508642771
>https://en.wikipedia.org/wiki/Supplicia_canum
Just the tradition of one city, and even then, I wouldn't completely trust the sources, because it doesn't make sense when compared to how romans worshipped a wolf, developed companionship with dogs whom they used for battle, and many even dedicated a tombstone for their dogs, pic rel.
What most likely happened was instructors being forced to kill one of their dogs as a reminder to train them better, kind of like a decimation in the roman army.
Catnigger propaganda at its finest.