Use reasoning to lead to the answer of the following question:
What do dogs get that make them itch?
Options:
- bones
- fleas
- bad breath
- wagging tails
- four legs
 Reasoning process:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Fleas is a small wingless jumping insect which feeds on the blood of mammals and birds. Dogs get fleas that make them itch. Therefore, the final answer is fleas.