brad from st louis on 6/30/2008 8:37:51 AM:
from the Katy Trail State Park website:
Can I take my dog to the state parks?
Pets must be kept on leashes at all times. Pets, other than service dogs used by persons with disabilities, are not allowed in any state park or historic site building including cabins and motels. You may take your dog on most of the hiking trails except at Johnson's Shut-Ins State Park, where you may not take your dog on the trail and down to the shut-ins.