One of our neighbor's pit bull puppy attacked their poodle, killing it with the clench of its jaws around the poodle's neck. They were attempting to teach the pit to not act aggressively towards the smaller dog while eating. Without growling, the pit suddenly lunged at the tiny poodle, killing it instantly. The owners had to use brute force to get the dog to release the now dead dog.
Sadly, they're giving the dog away instead of taking appropriate actions to ensure this, or worse, doesn't happen again.