Menagerie of Mysteries

In this level 6 adventure for 4-6 players the party comes across a man named Johann Dhomm who was transporting animals in cages to his private island where he has a menagerie (a kind of zoo) that he eventually wants to open to the public. But the animals have escaped and he asks the party to try and catch them alive for him. However, the animals are actually quite dangerous and range from Gazers to a Wyvern.