To learn how fast an otter can run on land, and get a close up look at an otter foot - try this website: http://luddist.com/otter.htm
Check out this website by National Geographic Kids. See if you can find the scientific name for the North American River Otter. It begins with the letter "L".
Do you know how many species of otters there are? Find out at http://www.otter-world.com/.