Animal Care Staff responds: We currently (May 2008) have a 28-year-old female housed with a 2-1/2-year-old male and 2- year-old female. None of the three are related, and the male is starting to breed both females. These three animals do a lot of vocalizing in the morning, apparently directed at the keepers. They can easily be heard at 100 yards while in their bedrooms, and possibly more, depending on other ambient noise. I'm sure the noise carries even farther if they are outside, but the vocalizations they use outside with each other don't usually go full volume. The most common vocalization we hear is the young female at high pitch when the male chases her. The older female tends to make a lower pitch complaint when the male gets rowdy. During the introductions, it was mostly the young female that was making noise; the older animals relying more on scent and submissive posturing by various tapirs.