A creature living in the treetops, looking like a cross between a monkey and a frog. Originally from the South American states, but it has been exported all over the world. It has a smooth bare skin, a marble green appearance and floating membranes on all limbs. Arms and legs strong and agile, which allows jumping in the branches. Short horns on the head and a wide mouth in a constant grin, but full of sharp teeth. It eats lizards and birds. But the most prominent feature is a large wart in the middle of the forehead, which turns red and flashes in danger. American magicians no longer treat them en masse (which was helped by fines) as a signal of the presence of Muggles, so they no longer have to explain to their neighbors why they still have Christmas lights installed on the trees in June.