Yes.
In principle, it can come from any kind of "food" animal. Common are pork and cattle.
Leather can be made from calves
Calves.
Bull calves, steer calves, cows and heifers.
Calves. It is highest in palm. Sole come in between.
Veal does not come from any part of a cow. Veal is the meat from dairy bull calves that are not needed in dairy production and are sent either for slaughter or to be fed a special feed prior to slaughter.
Polar bear liver
river
No. It's not an animal.
rabbit
Elephant