Which type of event involves the way animals like calves or steers lower their heads to avoid being caught?

The focus of the question is on the behavior of animals, particularly how calves or steers lower their heads to avoid capture. This behavior is typically observed in timed events where animals are prompted to run away or evade capture during the competition.

In timed events, such as calf roping or steer wrestling, the objective is to catch or stop the animal as quickly as possible, and the animals often use tactics like lowering their heads to try to evade the ropers. This instinctive behavior helps them maximize their chances of escaping.

Other types of events, such as roughstock events, focus more on the rider's ability to stay on the animal rather than a specific animal behavior aimed at evasion. Barrel racing involves maneuvering around barrels, and team roping requires coordination between two ropers but does not emphasize the same evasion tactics seen in timed events.

Thus, the correct answer aligns with the context of the question regarding animal behavior in relation to competition in rodeo events.