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.
Â· Twisted Artery: Another common cause of rushing sound in the ears is a twisted artery in the neck leading to a restricted blood flow. This leads to a build-up of pressure as the blood pushes a path through the vein. This can also be caused by a clogged artery that may need minor surgery to put right.