I need help on this question please

What is the main theme reflected in this excerpt from "ulysses" by alfred, lord tennyson?

Atheme from letter 4 in frankenstein is “friendship is sometimes born in the most unconventional places and situations.” this theme is conveyed through the conversations between walton and frankenstein, and these talks lead them to become confidants and friends. describe a theme from letter 3 of frankenstein and a different theme from letter 4. how are these themes conveyed in each letter? provide evidence from the text to support the themes expressed in each letter.

Which type of story uses animals as characters in order to illustrate a general truth about human nature?