Thousand Islands National Park area to defend the British from American invasion. Inside the park, Cedar Island, a small island visible from downtown Kingston, Ontario, is the site of a Martello tower named Cathcart Tower. The park was established in 1904, the first Canadian national park east of the Rocky Mountains. It was called "St. Lawrence Islands National Park" until 2013, when it was renamed to "Thousand Islands National Park" to reflect the natural area in the name. In 1997, the park was named one of the national parks with the highest levels of ecological impairment. Animals that inhabit this national park are coyotes,
North American river otter openings in the ice, and may excavate passages in beaver dams for accessing open water. North American river otters are highly mobile and have the capacity of traveling up to in one day. Daily movements of yearling males and females in Idaho averaged in spring, in summer, and in autumn, respectively. Daily movements of family groups averaged in spring, summer, and winter, respectively. Both males and family groups travel drastically less during winter. North American river otters are renowned for their sense of play. Otter play mostly consists of wrestling with conspecifics. Chasing is also a common game. North American