3035 years
animal
ball
border
breed
canine
caucasian
command
customs
detect
detection
dog
drugs
duty
female
field
german shepherd
grass
guard
handler
inspection
instructor
male
mammal
man
military
obedience
officer
outdoors
outside
patrol
pedigreed
pet
play
police
professional
purebred
safety
search
security
service
sniffer
teach
trained
trainer
training
unit
woman