There were few schools that met their 'special' needs, because very few people knew what their area of expertise was.  They took official military school curricula and modified it, to meet those needs.  As a result, a majority of their dog handlers were trained 'in house' by police departments, rescue squads, emergency crews, etc. 

The recipients of this training considered themselves dog handlers (like other areas of expertise), as did their team members but, few were documented as such.   There were approximately 10 of these dog handlers in SEAL Team 2.

Five  others graduated from the Sentry Dog School at Lackland AFB, Texas.  They were drawn from SEAL Team 1, SEAL Team 2, and UDT-21.  The course they took was modified, abbreviated, and tailored to meet their needs by the highly qualified staff at Lackland. 
 

Upon completion of the course at Lackland they were sent to an experimental program at the Naval Research Center in Panama City, Florida.  The main purpose, although there were several, was for the detection of enemy swimmers.

It was hoped that the K-9's could be employed to guard fixed emplacements such as bridges, outposts near the waters edge, and mooring sites for small boats, or even large ships.  There were many things that developed from that program as all the dogs were evaluated as doing so much more than was ever imagined.  One for instance was that K-9's could be employed to ride aboard small river craft for the detection of enemy swimmers not only on the surface, but underwater as well.  Using a zig-zag patrolling pattern down wind could produce a very high reliability of these dogs detecting swimmers up to a mile away and as deep as 30 feet.