Exodus 22:29-31

22:29 “Do not hold back offerings from your granaries or your vats. You must give me the firstborn of your sons. 22:30 You must also do this for your oxen and for your sheep; seven days they may remain with their mothers, but give them to me on the eighth day.

22:31 “You will be holy people to me; you must not eat any meat torn by animals in the field. You must throw it to the dogs.