Today Kal-El spent some time observing a live creature in his home environment...his cousin.
When observing creatures in the wild, it is best to start from a distance...say with binoculars.
Once you've determine they are friendly, it may be possible to get in close with some scientific instruments.
First, check the heartbeat.
Next, the blood pressure.
Uh oh, it was a little high...
...better take a temperature reading. You're going to put that where?
Examining the source of the drool with a magnifying glass.