[@Lmpkio]
My idea was my guy thinks that the spider is like a dog. Kind of a running joke with my guy.  Like "Oh look at how cute she is! Fetching the prey like a good girl! Who's daddy's best spider! You are! You are!"

Also one more question: Are humans born outside the Sol System? Like could my guy be born on some far away human colony?

Okay maybe not the spider but a bug.  They are adaptable and it would fit the theme of going to different planets. My original plan was for robotic animal friend but this sounded more interesting.