Just a few words on the box and packing methods.
Judging by the crease in the front corner of the box in the first picture posted, this box was partially crushed from above. This is not surprising really, shipping companies have far less respect for our packages than we often like to believe.
A shipping box can hold up to a fair amount of vertical pressure, most are rated for 200 pounds or so. This is only true for boxes in new condition though. Consider the size of the snake. An 8 foot snake is a pretty strong animal, and can easily bulge the sizes out on that box by pressing against two opposing walls. If the walls were pushed outward a little by the snake, it would drastically reduce the amount of weight it could hold up.
Styrofoam lining however, basically takes that 1/8" cardboard box and makes it far thicker and stronger. I use 3/4" blueboard to line my shipping boxes, and a finished box can take a considerable amount of vertical pressure.
Just for those who may not be familiar with lining boxes, here's a couple of pics of my method.
I interlock the side pieces for the most strength, and the sides are sandwiched between the top and bottom pieces. With plenty of padding inside, the animal is protected to the fullest degree I can provide.
As to what the cause of death would be in this case we can't be sure. It may have been the temperature, but it could also have been a result of rough treatment during transit. Newspaper and 1/8" cardboard isn't much cushion if the box is tossed off the back of the truck at one of the hubs, and anyone who knows someone working in these warehouses knows there's alot of tossing going on there getting the boxes routed.
I only have one other comment and I'll stop. Greg asked:
The animal was delivered way later than anticipated and that was totally out of her control. How many people here guarantee an animal's live arrival under these circumstances?
I would and do guarantee live arrival including carrier delays. It is my opinion that if a shipper such as myself only offers service through the overnight carriers then it is their obligation to accept the risks associated with that method. I realize many people use this as an easy way out of taking responsibility, but unless the shipper offers the choice of sending the animal Delta Dash, I simply cannot see any grounds for denying responsibility if the package is late.
Overnight carriers guarantee on time delivery or shipping is refunded. They do not guarantee any contents, whether live animals or frozen meat, and will not reimburse for that, especially not live animals.
Even though many do it, it is simply not justified to lay this risk on the buyer, if the only option you give them is to receive the animal through an overnight carrier. If the shipper offered to send the package via Delta, and the buyer refused, requesting the overnight carrier, then the shipper is free to lay that risk on the buyer, it was their choice. Otherwise, I believe the shipper has to accept responsibility for the method he chooses to provide.