Mass. Gen. Laws ch. 247, § 2

Before the officer serving the writ delivers the beasts to the plaintiff, he shall take from the plaintiff or a person in his behalf a bond payable to the defendant in a sum equal to double the value of the beasts, with sufficient sureties, conditioned to prosecute the replevin to final judgment and to pay such damages and costs as the defendant shall recover and to return the beasts if such shall be the final judgment.