1 Answers
Dr. Md Rushad Rahman
এমবিবিএস(আরপিএমসি)
,
পিজিটি(মেডিসিন)
No, it is not necessary, but it does let others know the dog is working and cannot be pet. If someone doesn't pay attention to the vest and collar, reinforce them by explaining, and they continuously ignore, then leave the store or place and go back at a different time.
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