Over the course of March in Sedona, the chance of a day with only rain decreases from 17% to 12%, the chance of a day with mixed snow and rain remains an essentially constant 1% throughout, and the chance of a day with only snow remains an essentially constant 0% throughout.
Testing. 1  All dogs should be tested annually for heartworm infection. 2  Dogs should be tested for heartworm if they are going to be switched from one preventive to another. 3  Puppies under seven months of age can be started on heartworm preventives without first being tested.
This will help to determine how severe your dog's breathing difficulty is and whether the problem is in the lungs or somewhere else in the chest. Your veterinarian may also draw blood for a heartworm test.