It’s worse than that. Any liver, including from domesticated animals, contains potentially toxic amounts of vitamin A. Lethal in extreme cases. So ... some people reccomend eating no more than 3oz of beef liver per week, or no more than 3 oz of chicken liver twice per week.
“Potentially toxic” is a meaningless scare phrase. Vitamin A toxicity from animal liver has historically been associated with the consumption of polar bear livers by early arctic explorers. Not with the consumption of beef, lamb, calf,or chicken livers. The main advice on restricting those meats is due to cholesterol not vitamin A toxicity.