EuroGraphics Orangutan & Baby Orangutans are among the most intelligent primates; they use a variety of sophisticated tools and construct elaborate sleeping nests each night from branches and foliage. These apes have been extensively studied for their learning abilities. Strong high-quality puzzle pieces. Made from recycled board and printed with vegetable based ink. This superior quality puzzle will delight and educate all at the same time. 1000-Piece Puzzle. Finished Puzzle Size: 19.25 x 26.5.