I mean, I already knew that gelatin is made from bone and other animal by-products but reading about it makes it a bit less appetizing.
For those who didn't know:
Gelatin is a mixture of peptides and proteins produced by partial hydrolysis of collagen extracted from the skin, boiled crushed horn, hoof and bones, connective tissues, organs and some intestines of animals such as domesticated cattle, chicken, pigs, and horses. Food-grade gelatin is produced mainly from two raw materials, beef skin and pig hide.
Source: https://en.wikipedia.org/wiki/Gelatin