a you know and introduce disease it's not a disease it's because naturally in the system so there's all these factors playing a role in. this dog has now been vaccinated against distemper and he seems to have come through the procedure pretty well. poachers represent a major threat to any animal species in the park. rhinos have been targeted for years powder made from their horns is widely used in traditional asian medicine many people believe it has special powers. peter is back in the air this time to study the rhinos migration patterns. his team will attach transmitters to the animals.