Were all of the animal offerings completely consumed by the fire?

Only in the case of the burnt offering was the whole animal consumed by fire (all of it offered to God). This became a picture of total consecration, for in the same way the nation was to be utterly committed to God. In most sacrifices, however, the animal was eaten as part of a meal. The priests would literally butcher the meat and bring it back to the person and/or family who offered it (they would then eat the meal as part of worship).

–Don Porter