The Hograt is a species of animal that can be found in various locations around the World of Baten Kaitos. Hograts, naturally, resemble a cross between a hog and large rat. They're found in dark waterways such as the Mintakan Sewers and the basement of Duke Calbren's Manor.
For the Animal Collecting quest, Kalas can acquire the one in the runoff area underneath Duke Calbren's Manor.