Refrigerator

I don't know if it's because the weather is warmer now that summer is in full swing, or that it's full of food, or all the shiny surfaces call to him, but for whatever reason Evan has become a hard-core refrigerator fanatic recently:

This scene (Evan climbing into the fridge, not necessarily the dog eating spilled broccoli and cauliflower off the floor) repeats itself pretty much any time you open the fridge unless you get in and out quickly. In fact, we can use the fridge to test a variety of his developing physical attributes:

• Reaction time: How fast can he start moving towards the fridge? Early results indicate this needs to be measured in milliseconds, so we're going to need better instrumentation to get an accurate measurement.
  
• Balance: How long can he stand in the fridge? We haven't found a time limit yet... he'll stand there as long as you're willing to keep the door open.
  
• Hearing: How far away can he be in the house and still know to make a beeline for the fridge? Because this test requires a secondary observer to be run successfully it entails a little more planning and dedication to science than we have shown thus far. Anecdotal evidence suggests no place in the house is too far away for Evan to respond to the siren call of the refrigerator, though.
  
• Strength: How far can he climb into the fridge, and how long can he fight off the door as it's closing on him? To perform this test with any real rigor requires a more impartial (or, one could argue, cruel) practitioner than I. It is fair to say that lightly shutting the door is insufficient to dislodge him. Don't ask me how I know this.
  

If you can think of any other experiments that should be added to the study I'd be eager to hear them. If feasible we'll include them in the next round of trials.