Restrict exercise. But your dog's normal physical activities must be restricted as soon as the diagnosis is confirmed, because physical exertion increases the rate at which the heartworms cause damage in the heart and lungs. The more severe the symptoms, the less activity your dog should have.
Can I walk my dog during heartworm treatment?
Most dogs can be safely leash-walked during the treatment recovery period and providing appropriate chew toys can help relieve some of that stored up physical energy.
How long can you walk a dog with heartworm?
One quick burst of speed chasing a squirrel or stray cat could bring on an embolic complication. For most heartworm-treatment patients the activity restriction period is only 2-3 months long. Considering that following the warning may avoid a fatal complication makes it a small price to pay.
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