Most veterinary eye specialists believe the actual cause of tear staining is excess tearing. When the face hair is wet from excess tearing it is the breeding ground for bacteria and yeast. One of the most common yeast infections is Ptyrosporin or Red Yeast which causes a deep reddish-brown stain.
Definition of assignment. 1  1 : the act of assigning something the assignment of a task. 2  2a : a position, post, or office to which one is assigned Her assignment was to the embassy in India.b : a specified task or amount of work assigned or undertaken as if assigned by authority a homework assignment.
Generally contracts are only binding on the parties that sign them. Even when they are assigned from one party to the contract to a new party, the assignment is a contract between the assignor and the assignee and doesn't require the other party to the assigned contract to go along with the assignment.