Exodus 22:29-31

29“You shall not delay the offering from your harvest and your vintage. You shall give (consecrate, dedicate) to Me the firstborn of your sons.

30You shall do the same with your oxen and with your sheep. It shall be with its mother for seven days; on the eighth day you shall give it [as an offering] to Me.

31“You shall be holy men to Me; therefore you shall not eat meat [from any animal] that has been torn to pieces [by predators] in the field; you shall throw it to the dogs.