​Catoctin Wildlife Preserve and Zoo
This preserve and zoo is north of Frederick, off of Route 15.  Over 20 acres of animal exhibits, many in natural settings.  Interpretive programs, safari ride, camel rides, butterfly garden, and petting zoo part of the family fun.   Open daily April through October. 
https://catoctinwildlifepreserve.com/

Green Meadows Petting Farm
Full petting zoo and farm in Ijamsville with interactive animal exhibits and educational displays.  Open during school hours; check website for hours of operation. 
https://greenmeadowsevents.com/urbana-farm

Leesburg Animal Park
Family friendly 21-acre animal park in Leesburg, VA.  Open daily during school hours (closed Mondays).  Call first as the park will cancel during inclement weather.
http://leesburganimalpark.com/index.html

South Mountain Creamery
Operational dairy in Middletown with calf feeding times daily and hands on educational events.
http://www.southmountaincreamery.com/visit-us​