Test your dog knowledge at the third annual 4-H Dog Skill-A-Thon Tuesday, April 10, 3–7 p.m. at the Lancaster Extension Education Center, 444 Cherrycreek Road. Youth do not need to be present the entire time. Just come at your convenience — it usually takes one to two hours. Open to all youth ages 8–18 (need not show a dog in 4-H). Non-4-H members are invited to enroll in 4-H at the contest. There will be a variety of topics including: parts, parasites, breeds, confirmation, and more. Preregister by March 30 by calling 402-441-7180.