http://tinyurl.com/27682c9 pre-train at home under no distraction first - then manage the reactive-dog and the environs
to slowly introduce the reaction-triggers (the other dog, garbage-can, high-wheeled BIG diesel-truck, squirrel...),
while keeping the dog
under threshold. notice how the head-down hunt for treats, gives the reactive-dog
a non-confrontational appearance to the dog passing by -
sniffing is a displacement activity, which is calming
to the dog sniffing, and reassuring to the dog observing that behavior.
for more on
Triggers + Thresholds, see
http://tinyurl.com/y96gwy2