Following the question that was asked during the Halacha lesson:
A Gentile is permitted to build an altar and sacrifice an animal or bird that he possesses that is kosher as a full burnet offering sacrifice to God.
Sources:
Maimonides Laws of the Sacrificial Procedures 19;16.
It is brought in the Oral Torah that the meaning of the verse in Leviticus 22:28 is that only burnt offerings can be sacrificed by Noahides.
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