unvaccinated adult dogs receive two rounds of vaccinations about three weeks apart after that dogs usually receive boosters annually the basic shots for distemper hepatitis parvovirus parainfluenza and sometimes leptospirosis and coronavirus usually are administered together in a combination vaccinenvaccinated adult dogs receive two rounds of vaccinations about three weeks apart after that dogs usually receive boosters annually the basic shots for distemper hepatitis parvovirus parainfluenza and sometimes leptospirosis and coronavirus usually are administered together in a combination vaccine
The following medical conditions are some of the possible causes of Hissing in ears. There are likely to be other possible causes, so ask your doctor about your symptoms. 1  Acute ear infection.  Chronic ear infection.
The most common triggers of plugged ears are: 1  Ear Wax. 2  Blocked nose. 3  Cold. 4  Sinus infection. 5  Allergy. 6  Accumulation of water within the ear. 7  Changes in atmospheric pressure while travelling in an airplane. 8  Blockage in the Eustachian tubes.