Don't be sorry, this is an eye opener. Alaska is the only airlines I fly, and I'm planning to fly to AK this spring. If I'd been on that flight, I'd have a dead dog.
Military Training Facility
To attend one of the military training facilities, submit an application form and fee.
Application form--Physiological training application form (AC3150-7) contains locations, fees, scheduling procedures, course content, individual requirements, etc.
How to obtain--From the accident prevention specialist or the office forms manager in the nearest flight standards district office (FSDO) (addresses and telephone numbers for FSDOs can be found in Section 12).
Tlme of useful
consciousness
Altitude (ft) without oxygen
40,000 15 seconds
35.000 20 seconds
30,000 30 seconds
28,000 1 minute
26,000 2 minutes
24,000 3 minutes
22,000 6 minutes
20,000 10 minutes
15.000 Indefinite
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So you wouldn't have necessarily lost your dog. Depends on how fast the descent was. And the lower you get the longer you (and your dog) will stay conscious.
http://www.afn.org/skydive/sta/wts-hab.html
plus at other links