Md. Code, Natural Resources § 10–701

(a) A club or association may not hold a field trial with dogs in the State during any closed hunting season without first obtaining a permit from the Secretary.

(b) The Secretary may grant a permit to field trial clubs and associations to hold field trials with raccoon, opossum, bird, or rabbit dogs in the State any time during the closed season. Field trials shall be held pursuant to regulations the Secretary adopts to safeguard the interests of wildlife in the State.