You’re right. I would never let my pets behave like that. The dog could have been blinded, or gotten a terrible infection. People can be so callous.
My poor Djinni the Ibizan Hound got corneal ulcers from fiberglass exposure when she was about 2 years old.
Not only was it expensive to treat, it was horrible agony for her until we got them under control.
She spent the next 12 years vision impaired because of the scarring.
It tore me apart.
All it takes it a “little damage” to an eye...