Over feared, and heavily misunderstood, spiders fill an important niches within the ecosystem. Spiders have an incredible diversity of species, many produce intricate webs for trapping their insect prey. Spiders – National Park Animals for Kids A number of spiders are among the 150species explored in Finley-Holiday’s “National Park Animals for Kids DVD.” Filmed entirely in the national parks by renown nature videographer Russ Finley, the DVD explores 6 classes of animals: mammals, reptiles, amphibians, birds, fish, insects and spiders (aka bugs) in over 2 hours of video. Available on location at America’s National Parks and at finleyholiday.com. Finley-Holiday Films.