...owned by a large corporation. Can the wrangler sign it, or the stable manager? Or does it need to be a corporate officer maybe?

"Dorothy" is owned by a guest services contractor who has the franchise for guest services within several U.S. National Parks.

What about a mules who are contracted out to the guest services franchisee by as livestock contractor? Whose signature do I need?

Couldn't I just get Dorothy's hoof print on the form?