And ya we need more connective tissue, skin, bone, hoof etc in our diets. Look into making yourself Aspic.
Aspic jelly
Aspic or meat jelly (/ˈæspɪk/) is a savoury gelatin made with a meat stock or broth, set in a mold to encase other ingredients. These often include pieces of meat, seafood, vegetable, or eggs. Aspic is also sometimes referred to as aspic gelée or aspic jelly.
https://en.m.wikipedia.org › wiki
Aspic - Wikipedia
U can put like peas and carrots or anchovies or w/e in it. Really good stuff.