The behaviorist, who has worked with tens of thousands of cats, said the thing that bothered him most about Lux was his continued aggression the day Palmer called 911, including the animal's ongoing assault on the door even though the threat was gone.
But the word "attack" doesn't sit well with Galaxy because 75 percent of the time, it's tied to a grouchy mood or a warning, he said.
"If I have a headache, I won't be the nicest guy in the world. I may snap at you," he said. "This may have been Lux's way of snapping. Hypothetically speaking, someone pulling his tail may have been the last straw."