Tex. Family Code § 262.110

(a) An authorized representative of the Department of Family and Protective Services, a law enforcement officer, or a juvenile probation officer may take temporary possession of a child without a court order on discovery of a child in a situation of danger to the child's physical health or safety when the sole purpose is to deliver the child without unnecessary delay to the parent, managing conservator, possessory conservator, guardian, caretaker, or custodian who is presently entitled to possession of the child.

(b) Until a parent or other person entitled to possession of the child takes possession of the child, the department may retain possession of the child without a court order for not more than five days. On the expiration of the fifth day, if a parent or other person entitled to possession does not take possession of the child, the department shall take action under this chapter as if the department took possession of the child under Section 262.104.