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The low consumption of animal protein food is one of the causes of the increasing number of stunting in Indonesia. This study analyzes the effect of changes in prices and incomes on demand for five animal food groups, namely fish, chicken, beef, eggs, and milk. The demand function approach uses the Almost Ideal Demand System model using Susenas 2016 data totaling 124,513 households. The results showed that beef was the most elastic animal food among all animal foods with a demand elasticity of 1,031%, followed by chicken meat (0.564%), milk (0.451%), eggs (0.313%), and sea fish (0.151%). Beef is a luxury item. Beef is substituted with sea fish, eggs, or chicken meat. Beef is complementary with milk. The increase in beef prices is one of the policies that need to be considered so that the target of protein consumption is immediately reached