Fleet of foot
The desert monitors in particular are a class vanishing act. They
can literally disappear before your eyes—that's if you manage
to get close enough to spot them in the first place. (Here, tracks
leading to a perentie.) Monitors can sense you from hundreds of feet
away and usually dive for cover before you know it. Or they simply
"freeze" and blend in with surrounding logs and rocks. The
camouflage of their beautiful skin patterns can make them invisible
even from close range.