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.
My pup had his first heartworm tablets at 13 weeks old. However, you shouldnt give a dog over the age of 6 months any heart worm tablets etc if he hasnt first been heart worm checked as it is possible for dogs to die if they are given heart worm medication and they already have heartworm. lys Â· 8 years ago.Thumbs up.2. Thumbs down.owever, you shouldnt give a dog over the age of 6 months any heart worm tablets etc if he hasnt first been heart worm checked as it is possible for dogs to die if they are given heart worm medication and they already have heartworm. lys Â· 8 years ago. Thumbs up. 2. Thumbs down.