Detailed Instructions: Given a scientific passage and an answer, generate a question for the given answer.
Q: Passage: Courtship behaviors occur in many other species. For example, males in some species of whales have special mating songs to attract females as mates. Frogs croak for the same reason. Male deer clash antlers to court females. Male jumping spiders jump from side to side to attract mates. Answer: courtship
A:
What type of behavior is frogs croaking or deer clashing antlers an example of?