
In the English language, the word "who" is almost always used as a pronoun.
It represents a person, similar to the words "I" and "me".
I don’t quite understand what your asking
Shark : fish :: koala : bear
At least I think it is because a shark is a fish so I guess a koala is to bear.
I hope I helped :)
Answer: yeah
Explanation: “They feed on small mammals” ?