The Winchester Board of Health and Winchester Animal Clinic are sponsoring a rabies clinic from 1 to 3 p.m. April 20 at the Department of Public Works yard, 15 Lake St. The event will be held rain or shine. Both dogs and cats are welcome. Pet owners are asked to bring their animal’s vaccination records from 2012. The cost is $10 per animal. Under Massachusetts law, dogs, cats, and ferrets must be vaccinated for rabies, a disease that is caused by a virus and attacks the central nervous system, including the brain. According to the state Department of Agricultural Resources, symptoms may include unexplained aggression, impaired locomotion, varying degrees of paralysis, and extreme depression. Rabies can be spread by a bite or scratch. After the onset of symptoms, terminal paralysis and death can result. For more information, visit www.mass.gov/eea/agencies/agr and search for “rabies” from the home page.