I took a K9 class that OTMA put on a couple of years ago. It was a good class and I enjoyed it. I and several other docs who attended paid our dues there to become members of OTMA. They took the money and we never heard from them again, despite several emails. So buyer beware when it comes to OTMA.
A few years ago when Denis Fitzgerald was at UC, he helped develop and run the TEMS class, and it was good. I don't know what it's like now. It may be good, but after the membership experience, I'm not shelling out a bunch of cash to find out.
Some other programs, in addition to the NTOA and CONTOMS classes mentioned (both excellent, BTW):
Rescue Training Inc.
www.emtt.org
Tac-Med
www.tac-med.org
ISTM
www.tacticalmedicine.com
'zilla