Leviticus 22:21, 23

“When a man presents a fellowship sacrifice to the LORD to fulfill a vow or as a freewill offering from the herd or flock, it has to be unblemished to be acceptable; there must be no defect in it.

You may sacrifice as a freewill offering any animal from the herd or flock that has an elongated or stunted limb, but it is not acceptable as a vow offering.