True that - saw all kinds of stuff working in a shelter. There were always 'problem' dogs - dogs that were the sweetest thing imaginable when you got them on a walk, but would lose their shit around something inexplicable, i.e. a small dog, big dog, cage, car, men, women, etc. Just had to be patient and try to work around whatever issue they had, hoping it didn't come up and result in someone/something getting bit.