Depends on their musculature

This was the most "androgynous" looking goblin I had...

Konsi's first two years of life were as a goblin in a goblin clan, so would have eaten the same as the rest of them, after that, the next four or so years of her life were as a street urchin in Waterdeep. She ate a lot of scavenged food from trash cans and rats.

She's definitely eaten beetles.

Variable based on the game. In modern d&d humans are the least specialized, while in old d&d (like 2e) humans were mechanically Inferior until higher levels, where they had the highest level cap. Also demi-humans (elves, dwarves, etc) were fewer in number, Tolkien-style, and sometimes discriminated against. In fact it kinda seemed like the less liked a race was, the more inherent abilities they had.