Ok, I ran it through cronometer, just to see.
In one ounce of raw lamb liver, there is:
5 grams of protein
1.4 grams of fat
You'll get 912% of your RDA of B12!
And 161% of your RDA of Vitamin A!
152% of your RDA of copper
Also significant amounts of:
B1, B2, B3, B5, Folate, Iron, Phosphorus, Selenium, and Zinc
I don't know how that compares to beef liver, or chicken livers, actually, but it...