Excellent advice on 10 things for safe and courteous behavior in your vet’s waiting room. I think my favorite is keep your dog leashed and under your control—no retractable leashes. Vet clinics are places of stress and fear, not to mention being populated with sick and injured animals, so it pays to be alert.
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Another thing is to keep your cat in a carrier. A cat running loose with a bunch of dogs can be a definite hazard.