Crocs without an owner are considered public.

GET /public/crocodiles/1/
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "id": 1,
    "name": "Bert",
    "sex": "M",
    "date_of_birth": "2010-06-27",
    "age": 10
}