...Delta, and especially DASH (whenever a change of planes is required:
1) DASH can move from plane to plane in less than an hour, whereas Delta wants a minimum of 6 hrs on the ground at most, perhaps all, airports to make a connection. It's that time on the ground that is the biggest risk, imho.
2) if you sched a DASH shipment carefully the animals are received the same day you ship them;
Other advantages:
3) With Delta, the package can be marked "live snakes", so the people handling it know they're handling that kind of animal, whereas the various subterfuges people sometimes use with other carriers (because they won't allow shipments of snakes) such as ("perishable"; "live crickets"; "lizards" or no special handling markings at all) simply beg for the package to be mishandled. Can we blame a driver who leaves a box in a hot truck on a texas afternoon, if he thinks it's got cxrickets...or books or whatever, in it? Most of Delta's freight offices have special animal rooms where packages are kept until loaded for outbound flights, and until picked up byk the customer, after arrival.
4) with Delta you can INSURE your shipment (50 cents per hundred of value, I think); DASH shipments are limited to $750 of coverage but that coverage is free. With a different carrier, i don't know how you can insure something that is not what you've indicated is in the package! Besides, IMHO, i think a carrier who's financially responsible for the package is very likely going to be working harder at transporting it safely.
There's more, but you get the idea. I think on all points it's better for the animals. HARDER on us, no question: no door-to-door delivery, for examlple, and it costs more. So perhaps the decision boils down to question like, "what's more important, the welfare of the animals or my convenience?" the welfare of the animals, or the cost? how much savings/convenience does it take to get me to lie to a business about what i'm shipping?
But i think the safety of the animals should be the determinant. Delta's not perfect. But they're darn good. Oh, Continental "QuickPaks" are a good method too, for airports not so well served by delta flights.
One drawback: You've gotta be a "known shipper" to use delta, and that's gonna take some time and patience, paperwork, probably still a home/shop visit by a delta employee, too. That's part of the post 9/11 security measures.
peace
terry