system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Do all mammals require the same macronutrients and vitamins as humans do?
gpt
Most animals have similar cells and as such a need for the same things.

With that said, plenty of animals have a much less varied diet. They may not require the same quantity of every thing, but some can also synthesize some of the vitamin from others. A real life example of this ability can be found in rats. They can synthesize vitamin C. This was realized when scurvy was causing a bit issue in sailor (caused by lack of vitamin C) but rat never suffered from it.