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.
1 Heartworm testing generally take 10 to 20 minutes to perform. 2  If the test is sent to a veterinary diagnostic laboratory, it usually takes 1 to 2 days to obtain results. 3  A heartworm test is a blood test. 4  In order to obtain a blood sample, a needle must be passed through the skin and into a blood vessel.