英文關鍵字
coach
go
teaching
canine
animal
belgian
dog
pet
purebred
trainer
shepherd
command
obedient
owner
pedigree
protective
smart
teach
train
training
breed
domestic
friend
concentration
cynologist
cynology
defense
demonstration
exercise
exercising
guard
guarddog
handler
man
outdoor
pedigreed
preparation
protect
protection
security