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 Treatment. 2  Unfortunately, there is no approved drug therapy for heartworm infection in cats, and the drug used to treat infections in dogs is not safe for cats. 3  Nevertheless, cats with heartworm disease can often be helped with good veterinary care. Diagnosis. 2  While infected dogs may have 30 or more worms in their heart and lungs, cats usually have 6 or fewerâand may have just one or two. 3  But while the severity of heartworm disease in dogs is related to the number of worm, in cats, just one or two worms can make a cat very ill.