Default segment name in rails resources routing

/panda/blog
/tiger/blog
/dog/blog

map.resources :animals do |animal|
 animal.resource :blog
end

/animals/panda/blog
/animals/tiger/blog
/animals/dog/blog

resources :animals, :path => ""

$ rake routes

    animals GET    /                   {:action=>"index", :controller=>"animals"}
            POST   /                   {:action=>"create", :controller=>"animals"}
 new_animal GET    /new(.:format)      {:action=>"new", :controller=>"animals"}
edit_animal GET    /:id/edit(.:format) {:action=>"edit", :controller=>"animals"}
     animal GET    /:id(.:format)      {:action=>"show", :controller=>"animals"}
            PUT    /:id(.:format)      {:action=>"update", :controller=>"animals"}
            DELETE /:id(.:format)      {:action=>"destroy", :controller=>"animals"}