31. Return of animal.

If the buyer has reserved a right to return the animal within a specified time, he may return it at any time within that period, and is not bound to do so the moment he discovers the defects; so that if injury happens to the animal while in his possession, and without his fault, he is not liable for it and may still return the animal within the period1; and if the animal under such circumstances becomes injured so that it cannot be returned within the specified time, the non-return by the buyer within the period stipulated will not