I agree with one of the others comments. To knowing not take action when you find a child or animal is a vehicle is a form of negligance that should be criminal, and in many cases already is.
Also, i would imagine it is quite common for the driver to return before any authorities get there, so once again it is a good thing to be proactive enough to share your concern with the driver.
Lastly, i'll bet walmart doesn't train their employees on how to properly behave in situations like this. So, it is not reasonable for them to respondwith a firing over something somewhat trivial like being rude.
Also, i would imagine it is quite common for the driver to return before any authorities get there, so once again it is a good thing to be proactive enough to share your concern with the driver.
Lastly, i'll bet walmart doesn't train their employees on how to properly behave in situations like this. So, it is not reasonable for them to respondwith a firing over something somewhat trivial like being rude.