If any one of the Israelites or of the converts who dwell among them traps a wild animal or fowl that are permissible for consumption, when he sheds its blood, he must cover it with dust.
Leviticus 17:13
The Torah requires us to cover the blood that emerges from kosher fowl or kosher wild animals when they are slaughtered. This obligation does not apply to kosher domesticated mammals (cows, sheep, and goats).
All three types of kosher domesticated mammals can be offered up as sacrifices in the Temple. In contrast, only a minority of types of kosher birds (turtledoves and pigeons) and no types of kosher wild mammals (deer, ibex, etc.) may be offered up as sacrifices.
Blood signifies the energy and vitality that we invest in doing something. By telling us to cover up the blood of fowl and wild mammals but not to cover up the blood of domesticated mammals, the Torah is telling us that the energy and vitality that we invest in holy pursuits – as symbolized by the blood of the refined, domesticated animal – should be “uncovered,” i.e., openly expressed and articulated. In contrast, the energy and vitality that we invest in mundane pursuits – as signified by the blood of the wild, undomesticated animal – should be “covered,” i.e., muted and subdued. This ensures that our lives be properly focused and we maximize our spiritual potential.
Daily Wisdom 3