I remember reading that in the Amazon they have like an animal version of rock/paper/scissors, as all of the Jaguar, Anaconda & Caiman (like a crocodile) are able to kill & eat each other. I would love to watch that fight, definitely rooting for the Jaguar my favourite animal. Jaguars are a bit bigger than Leopards so its probably a bit easier for them to attack the lizards. If you keep it out of the water, my money goes to the big cats.