spider
mouse
rodent
cat
Answer is Wrong!
Answer is Right!
The answer is: rat.
The words in the top row are all small, furry animals. The words in the bottom row are all small, furry animals that are also rodents.
A spider is an arachnid, not a rodent.
A mouse is a rodent, but it is not a small, furry animal.
A rat is a small, furry animal that is also a rodent.
A cat is not a rodent.