Liver. Like other fat-soluble vitamins, vitamin A is stored in high concentrations in the liver. So eating liver is a good way to get more vitamin A. In fact, large animals have so much vitamin A in their livers that it can be harmful to eat them – beef liver contains three times the recommended daily dose of vitamin A, and polar bear livers have so much vitamin A that eating just one can result in hypervitaminosis A!
Egg yolk is also a good source of vitamin A, but not nearly as rich as liver. Vitamin A can also be found in fish, such as salmon, but again not in high enough concentrations to make this the right choice. Peanuts are not a significant source of vitamin A.