Taking a strong dog to Oklahoma state parks
The leash can be longer than in many states, but proof of rabies vaccination is part of the rule.

Leash and supervision
The Oklahoma State Parks FAQ says pets are allowed in Oklahoma State Parks if kept on a leash no longer than ten feet, supervised at all times and cleaned up after, and that pets are allowed in some lodging for an additional fee.
Vaccination proof
The Oklahoma State Parks reservation guidelines say all pets at Oklahoma State Parks must have proof of rabies vaccination, with documentation available on request. The rules on pets on premises sit in the Oklahoma Administrative Code 725:15-17-2.

The dog is the test
Lakeside parks mean swimmers, anglers and other dogs. Ask any professional to show steadiness in a place like that.
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