The word “livestock” (bᵉhēmāh) often refers to larger domestic animals (e.g., cattle). The term may also include smaller animals such as sheep or goats. The point that the author is making is that cultic sacrifices were to be taken from domestic animals, not wild animals. According to Deuteronomy 14:4–5, wild animals could be eaten if handled correctly, but could not be offered as a sacrifice to the Lord as it cost nothing.1
2 Parle aux enfants d'Israël, et dis-leur: Lorsque quelqu'un d'entre vous fera une offrande à l'Eternel, il offrira du bétail, du gros ou du menu bétail.