I'm honestly amazed that a nile monitor would attack something as large as a cat. They don't have the right build or the dentition for that kind of predation. I can easily see a lace monitor or a croc monitor taking down a cat, easily, but not a nile monitor.

Didn't people also accuse tegu's of eating cats? I can easily imagine a big male mauling a cat to death [they seem to have a strange, instinctual hatred and revulsion of cats], but definitely not eating one.